Omnimaga
Calculator Community => Other Calc-Related Projects and Ideas => Topic started by: DJ Omnimaga on April 29, 2010, 07:58:57 pm
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See topic title. I can't stress this enough. This is something that plaggued the old Omnimaga board a lot and still happens today here. It happened on other boards too. People losing all their project progress due to a crash of any sort, and projects dying because the person did not do any backups elsewhere.
When you program on calc, you're never safe from RAM Clears. Anything can happen. An ASM lib misuse, a teacher resetting your calc before an exam, a buggy Axe program, group corruption, an OS glitch (especially 1.13, 1.17, 2.53MP and 2.54MP), a previous ASM program rendering the calc unstable or even you messing up in your code and not being able to figure out how to revert the changes. All of these can cause the calc to freeze or crash then you lose everything. On the computer, you're not safe from crashes and data loss either. What about harddrive failures, viruses and the like?
Well, backup often and not at one place only. If you program on calc, group your stuff TWICE in a row, then try ungrouping. If you get ERR:VERSION, try the other group. Another solution is CalcUtil and Omnicalc RestoreMem (SE-only for the later and only for 84+ calcs made before April 2007), but do not rely too much on them. Sometimes, you should also copy your progress on either a computer or another calc, then another copy on a USB jumpdrive is a big recommendation.
It sucks to see projects die due to data loss and it feels very bad for the author and also the people interested in the project. So yeah, backup often!
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I won't mention how many times I lost data (only on small, worthless ASM and BASIC programs) by, after losing the original, trying to ungroup the backup I had made and getting an ERROR:VERSION on the wanted file or getting it on a file alphabetically before, causing me to be unable to get the file in question.
So, yeah, not even your archive is a completely safe place.
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My worst ever calculator project data loss was the "Illusiat 2002: La Quête Ultime" RPG. A MirageOs bug caused both RAM and archive to mess up and RAM clears would fail so I had to reset the entire memory, deleting the entire game.
In my case I had no way of backing up, though. I had no computer at home, no TI-PC link cable to send the files to a school computer. My bro had a calc, but he needed the memory on it so I had to take my backups off his calc.
I stopped caring about anything calc related for the next 2 months after the data loss x.x. The only thing I was ever able to recover is the title screen, which my bro forgot to delete from his calc. The title screen was re-used later in a VB project, modified.
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My worst project was the newest update for my Ti 84 + SE and the whole thing had weird characters over it and during that time, I was working on a Starcraft project. I had to reset the whole thing.
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Do you mean OS 2.53 MP? I never heard of this crash before. I know 2.53 is supposedly buggy, though. And that sucks about your project x.x
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Avoid playing assembly games while coding.
And danger with other TI-BASIC programs that use/erase your strings or pictures.
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I won't mention how many times I lost data (only on small, worthless ASM and BASIC programs) by, after losing the original, trying to ungroup the backup I had made and getting an ERROR:VERSION on the wanted file or getting it on a file alphabetically before, causing me to be unable to get the file in question.
So, yeah, not even your archive is a completely safe place.
That ERR:VERSION has happened to me too. Why does it happen? I group a couple of perfectly fine variables, then ungroup it on the same calculator, and it throws a version error. It happened as I was finishing up a pretty complex game after weeks of working on it, and I had no choice but to delete the broken group to free up archive space. Once, however, I did get my files back. I was somewhat panicking when I saw the ERR:VERSION again, and tried everything I could to get my precious program back, including deleting the application MirageOS. For some reason, it worked. Anyone have any idea what's going on?
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it's impossible to figure out when an ERR:Version will happen. It seems very random. ALl you can do is group your files twice or three times in a row and hope one of the group will work fine.
It's Texas Instruments buggy OSes fault. It seems like the only good alternative to that is to have two calcs and backup your stuff on the other calc before testing. Sending the stuff to the computer is not 100% reliable, since files can corrupt when sent on the computer. You really need to double-check your backups when you do any, unfortunately :/
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it's impossible to figure out when an ERR:Version will happen. It seems very random. ALl you can do is group your files twice or three times in a row and hope one of the group will work fine.
It's Texas Instruments buggy OSes fault. It seems like the only good alternative to that is to have two calcs and backup your stuff on the other calc before testing. Sending the stuff to the computer is not 100% reliable, since files can corrupt when sent on the computer. You really need to double-check your backups when you do any, unfortunately :/
What a waste of Flash...
Why doesn't TI fix their bugs?
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Because they're are stupid x.x
They are starting to remind me Micro$oft
That said we must still thank TI for making those calcs, tho :P
Where would be the TI calculator community if calc gaming on their machines was totally impossible? I also think calc programming is a great way to get introduced to programming in general.
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Uploading to google code can help, if you know how to use a repository. Unless we have 1,000,000 hurricanes hit the United States, it's not very likely Google is going to lose your backups.
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Uploading to google code can help, if you know how to use a repository. Unless we have 1,000,000 hurricanes hit the United States, it's not very likely Google is going to lose your backups.
Yeah that can help too, as long as you don't want it downloadable to public (unless you can hide it?). It would be available until December 21st 2012, when Netham45 tries to nuke every lobster in the sea
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Or until January 19, 2038. :)
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Isn't that the Unix issue?
I am pretty sure that this will be fixed by then, though :P
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I think you can recover most of your backup in buggy groups by using GroupTool by Brandonw.
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Yeah, you can. I didn't know of its existence at the time, though. :P
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Celtic can also ungroup files. But I'm not sure if it can ungroup corrupted group files
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I have a question:
Sometimes, if I re-download and ungroup my backed-up file, some prgm says it only has 16 bytes of mem and if I try to run it, it ERRs me.
Is that the corrupted group file, or is it some thing else?
If it happens, how do I fix it?
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I have a question:
Sometimes, if I re-download and ungroup my backed-up file, some prgm says it only has 16 bytes of mem and if I try to run it, it ERRs me.
Is that the corrupted group file, or is it some thing else?
If it happens, how do I fix it?
Probably a corrupted group. It happens pretty often.
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Like once in every 16384 groupings, but a lot of us have experienced it because of how often we use it :P
You can't fix that bug, unfortunately, but thepenguin77's released several OS patches for various group bugs. Look around :)
And so you should probably group each set twice just to be more secure.
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That also happens when transfering a group file to your computer with TI-Graph Link or an old version of TiLP and TI-Connect, then send it back to the calc or WabbitEmu with more recent softwares/versions.
Groups aren't 100% reliable so I would be careful with them.
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Oddly enough i have never experienced the group bug ^^
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Just a random question: What are groups?
I've never needed to use them, so I have no idea what they are.
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Oddly enough i have never experienced the group bug ^^
Lucky. I've probably experienced every group bug out there x.x
Qwerty.55, they're basically like ZIP files without the compression. You can copy any vars you want to a group, often for backup purposes. You can't edit the group directly, but you can ungroup them (kinda like "unzipping").
Btw, it's 2nd+[MEM] > 8:Groups...
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yeah the cool thing about groups is that they can be ungrouped many times over so it saves the programs and pics and such and keeps them relatively safe :D
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But as you can see by this thread (and all those posts where people lost all their progress by a corrupted group :P), you really shouldn't trust groups for all your backup purposes. Groups occasionally get corrupted, so you should backup on other calcs/comps periodically.
And you should use the patches made by thepenguin77 (they're posted in Other calculator discussion and news > ERR: VERSION). I can't put the link here because I'm in a proxy right now :P
EDIT: And yeongJIN_COOL, archive everything before you try deleting that 16-byte program. I've had that happen before, and when I tried to delete it, it reset my RAM.
EDIT2: Here they were: http://ourl.ca/6542 (http://ourl.ca/6542).
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My only issues with groups so far were when sending them to the comp with TI-Graph Link. They were stored in a different format not supported by newer versions of TI-Connect then all other software/emulators decided to keep compatibility with TI-Connect, meaning old groups corrupts when sent to them. Also when grouping stuff sometimes a byte is changed in the group file. So in a BASIC game you may end up with a nice ERR:SYNTAX in one of your program.
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Oh, yeah, and TI sometimes doesn't even support their own group files. TI-Connect for Mac exports groups in .8xo form, but the group creator makes groups in .8xg format. Then you switch to the Windows TI-Connect, which doesn't even support the .8xo form.
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Yeah and even if you rename them to 8xg they still won't work. X.x
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I found DropBox very useful to backup online your project.
You have 2GB free and you can get more after following some tasks and inviting people.
This a tip more assembly or C calculator related, web development and other things. But you can also send from your calculator to computer and them put into DropBox.
For TI-BASIC you can also use SourceCoder2 in cemetech.
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Racer3D:Replay *sniff* *sniff*
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Racer3D:Replay *sniff* *sniff*
I take it it died.
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Dropbox seems intreresting. I personally used a folder on my webspace, but if I want a project to be top secret where the admins won't know either, that tactic won't work since they got access to the site FTP <_<
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Dropbox seems intreresting. I personally used a folder on my webspace, but if I want a project to be top secret where the admins won't know either, that tactic won't work since they got access to the site FTP <_<
ticalc.org has ftp? whoa, didn't know that. I don't know if any "safe" place to store it. I usually have it on a backup hard drive, but even that could get damaged. I guess you could have a svn. That usually works for code and such.
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I didn't said it did? ??? I meant on my 1and1 or AspirationHosting account. I usually put random stuff and backups on http://xlib.mtv-music-generator.com
Ticalc.org used to have FTP but only to access files, and it was removed several times due to security issues, until it got removed for good in late 2003.
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I didn't said it did? ??? I meant on my 1and1 or AspirationHosting account. I usually put random stuff and backups on http://xlib.mtv-music-generator.com
oh, okay. I read tactic as ticalc, for some reason.
/me goes to renew his glasses prescription
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Lol that happens :P
On an off-topic note, but still on the topic of backups, I did a forum/database backup last night right before going to bed. It ran overnight. :P
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Make your life easier using some backup up or synchronization program.
My pick of choice, on the time of writing this text, is FreeFileSync.
Plus two advanced tips for more experienced computer users:
You can monitor your hard drive state with one of this selection:
http://www.techsupportalert.com/best-free-hd-health-monitoring-and-diagnostic-programs.htm
And also do checksums of your most important files:
http://www.techsupportalert.com/best-free-hash-utility.htm
Hard drives failures can be unpredictable so backing up ought to be done.
And doing a checksum check, pun intended, is a smart thing to do. ;)
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Yeah that can be useful too. Just make sure to keep old copies for a while, though, in case you accidentally do a backup of a broken file then overwrite the older bug working one..
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DropBox is very good as well!
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Yeah that can be useful too. Just make sure to keep old copies for a while, though, in case you accidentally do a backup of a broken file then overwrite the older bug working one..
That happened me once, and hopefully I had a prior backup with a sane copy of the file.
I am starting to think to do a CD/DVD/Blu-ray backup of some things that don't get updated for a while and get the disk into a hard box.
Because if some file gets corrupt, you miss it and can propagate from there until you cycled your backups and there isn't any good copy of it.
And there are a lot of other things, like if you live on an somewhat dangerous area to natural disasters, leave DVDs or a small hard drive if you can afford it, with people of your family living far from you or far away friends of your trust.
I think I have everything thought out of my backups. And don't get too much paranoiac, 99% of people just doing a good backup of everything every 3 months and a backup of recent stuff when they accomplished significant progress will never loose considerable amounts of work.
Note a good backup is when you have a copy in somewhere independent of where you keep your stuff like two different hard drives on different computers or usb disks.
Sorry if my discussion/contribution is going too much in depth but sometimes I enjoy carrying out problems to all possibilities and I thought it was important for me and others trade some opinions in this respect.
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Yeah I should really do that sometimes. Omnimaga database is backed up on my hard drive every two week, the files are every month, but besides that the backup on my other computer is several months old. I should really put some of the files and other stuff I have on a DVD or something. I don't backup Omni files as often as the database because they are big and they're not updated as often. The database gets 300 new posts in every day.
If the db was much smaller I could probably back it up on my Casio Prizm too O.O
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Think I should bump this. I forgot and lost a month's worth of work on my contest entry.
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X.x, yeah, you guys (and girls?) needs to always backup because it would suck if like last year every single contestant would lose their entire entry progress.
I hope it doesn't mean you're giving up tho :/
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Er, found out it's still there but hidden because of a stupid keypress on my part. Got 'em back, time to back up <_<
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Oh ok phew O.O, that explains it (ON+CLEAR?)
But still, guys, backup.
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Yeah, yeah, doing that now :D
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I don't know if you guys know Kucalc over here, but that happened to him a few times. One of the worst things was Symbolix. The reason it hasn't been updated is because in 2009 his friends changed the code alot and he didn't have a backup.
P.S. I'm from casiocalc.org, so I'm talking about casio programs. And yes, casio calcs do crash. LOL
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Hi flyingfisch, noticed you've joined us in the past few days. Welcome to Omnimaga! If you have the time you can introduce yourself here (http://www.omnimaga.org/index.php?board=10.0) :)
And yes, casio calcs do crash. LOL
Glad it's not just TI screwing up XD
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Does Casio calcs crash even without ASM/C too by the way? On TI calcs, it's possible to crash a calc without even a single line of code.
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Does Casio calcs crash even without ASM/C too by the way? On TI calcs, it's possible to crash a calc without even a single line of code.
they do? even without code? wow.
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Indeed. For example make a huge matrix, store a 2 byte token in ans or a string such as a lowercase letter, fill the home screen with random stuff until you reach like 2 bytes of RAM or something, then recall the string. If by the time it tries displaying the 2 byte token you only have 1 byte of RAM left, then your calc freak out.
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I think, more than 80% of the members already found out why it is good to backup the progress often!!
(me too...) :(
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I almost had one of the horror stories..msd8x coughed one day and somehow formatted my flash drive x.x
(fortunately I had a backup on my normal flash drive so yay)
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I don't know if you guys know Kucalc over here, but that happened to him a few times. One of the worst things was Symbolix. The reason it hasn't been updated is because in 2009 his friends changed the code alot and he didn't have a backup.
P.S. I'm from casiocalc.org, so I'm talking about casio programs. And yes, casio calcs do crash. LOL
I think I recall a lot of mem clears/data loss indeed from him. Also some members here used to have it happen on a consistent basis, yet they wouldn't learn from it. X.x Same on other forums.
Of course I can understand if they have no way to backup, though, because of parents (like JustCause).
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I just lost my progress on pong. It didnt really take long since its so simple, but I'm still pissed. I backed up a few hours ago on computer so at least I didn't lose anything else.
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was it axe or BASIC?
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I just lost my progress on pong. It didnt really take long since its so simple, but I'm still pissed. I backed up a few hours ago on computer so at least I didn't lose anything else.
Don't you archive your programs ? Moreover those that are important for you ?
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I just lost my progress on pong. It didnt really take long since its so simple, but I'm still pissed. I backed up a few hours ago on computer so at least I didn't lose anything else.
Don't you archive your programs ? Moreover those that are important for you ?
That's not really a helpful way of phrasing that, Hayleia. Losing progress is a lesson unto itself. I'd say he's learned, and it's a good thing too: losing a small project and learning to backup now is better than losing a large project that it's unfeasible to recode. ^^
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That's not really a helpful way of phrasing that, Hayleia. Losing progress is a lesson unto itself. I'd say he's learned, and it's a good thing too: losing a small project and learning to backup now is better than losing a large project that it's unfeasible to recode. ^^
Erm, yeah, sorry, that could seem a bit rude. It is just that I (personnally) have the habit to always archive everything and I was surprised that he could lose something, it was not meant to be rude, more like "you don't have this habit to archive everything ?"
Also, as I am French, I don't always have the better way of phrasing in my mind D:
[offtopic]you are among the few ones that spelled my name right at the first try :D[/offtopic]
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I always keep everything in archive, and i LOVE the Axe program UNDELETE. It has helped me countless times.
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Well, personally I tend to get frustrated when someone posts that he lost progress, but it's like the 4th or 5th time and he still doesn't learn, though. In that case I might end up just replying "lrn2backup" or stuff like that. When it's the first time I prefer to redirect him here, though.
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Yeah, I guess it's time I submit the new undeleter on ticalc.org.
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As a Z80 ASM coder, I thought I should share this one experience when I changed over my OS from Vista to Win7.
I thought I had backed everything up by moving all of my project files which was on the desktop to the other partition (I have two partitions, one for the OS and one for all the other data), and I forgot to back up the reboot of Celtic 2, which I worked on for about a week up to that event.
When I went back to put the backed up files onto the shiny new desktop, I realized that I copied "CaDan2" and not "Celtic2". You'd think I would've caught that but it didn't happen until too late. I was having problems just dragging and dropping files into the backup shortcut, the damned thing was running so slow before I went to reinstall. Hell, it took over two hours just to get to see my desktop before I changed over my installation. I was getting rather impatient, but that ended up costing me in the end. I had absolutely NO backup of the revised Celtic 2 project.
When I went in to try to recover the files using the software "Recuva", it saw the contents of the old filesystem, but I knew my chances of success was slim. I mean, I cleared out an installed an entirely new OS and the chances of any of the files remaining intact was slim.
No such luck. It was overwritten completely by some Win7 component. The only file that was partially recoverable was this postscript file that was generated by Branchmap, which in itself does not contain any source.
In hindsight, I probably would've saved myself loads of time and headaches, and possibly the loss of this project, had I booted up some other OS from a live CD and copied the files that way. I mean, it should not take the same amount of time to make a sandwich to cajole Vista to let me drag a folder across the desktop to the backup folder.
Anyway.
tl;dr: Make sure your computer backups are safe too.
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My netbook decided to fail, and while the HDD is still intact, I can not read the content because its a 1.8 inch drive.
Luckily, I made a backup of the stuff a few days before, so my losses weren't that great. (Although I lost all my bookmarks :'( )
Now I always copy stuff I'm working to too multiple servers (local and online) and make a second backup every time I'm going to make a big change.
So now when bad luck strikes me, I don't have to worry :)
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Glad you had your stuff backed up, but that still sucks. x.x RIP Jim's netbook.
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My netbook decided to fail, and while the HDD is still intact, I can not read the content because its a 1.8 inch drive.
They have USB readers for those drives for less than USD$50. Amazon seems to have some for less than $10. (http://www.amazon.com/Enclosure-External-Drive-fixed-Screwdriver/dp/B0011Z7D1C)
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Well said Iambian and this sucks Celtic 2 might have died D:
Also it's always good to backup outside your home too. Imagine you got backups on CDs, flash drive, computers, calculators, but then a tornado or hurricane tear everything apart?
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Also it's always good to backup outside your home too. Imagine you got backups on CDs, flash drive, computers, calculators, but then a tornado or hurricane tear everything apart?
I think then you would have other problems... :D
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Yeah we have to remember about the murphy law sometimes :P
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What is that law again?
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I lost my character health codes because I archived my source :P
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This is awesome: I saved program in group file in calc and computer, and individual files in computer as well. They all got corrupted somehow X.x
Now what do I do?
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Punch yourself in the face and cry :P
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Get GFM (Group File Manager) and see if it can open the groups.
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[...]
Also it's always good to backup outside your home too. Imagine you got backups on CDs, flash drive, computers, calculators, but then a tornado or hurricane tear everything apart?
These days, I happen to keep a running backup of the very important projects like E:SoR and CaDan on an off-site FTP account. The primary purpose, admittedly, was to share source material with geekboy in a somewhat primitive manner, but it serves its righteous purpose as an off-site backup as well. And can also serve as a possible place to make a site for CaDan, but geekboy is the guy who's doing that job.
No matter how many local backups you make of your stuff, you can end up losing it all in a natural disaster. Since stuff like that happens rather rarely (areas where it's common do not apply unless your place isn't hardened against stuff like that. Example: Earthquakes in California), you don't think it could happen to you, but it could happen, and you will be thankful that not everything that tied you to this world was where your local stuff was at. I've got to worry about a tsunami wiping everything out, and if I happen to survive, first thing's first. Make sure my friends and family are alive (sorry guys). Second thing for me is to figure out how to get into contact with the community and tell everyone I'm just fine. People here on Omnimaga actually care about your well-being, which also makes this place one of the best communities out there. Is this a revelation for some? We do actually stick together and we worry about people when bad stuff happen.
Point is, once you get back on your feet and feel like you're ready to code again, you're gonna wish you had a reliable backup other than what you had at ground-zero. More power to you if you happen to have extremely damage-resilient flash drives, or indestructible CD/DVD's, or perhaps your information was stored on a Toughbook®. Maybe you had none of these and you're just SoL. Nobody wants to be there.
Although not feasible for most people, having a group of people working on your project, especially a group whose geographic locations are wildly varied, can help protect your project, since you're likely going to distribute source among your trusted online and/or IRL friends. Having multiple backups everywhere is simply a side-effect of the group effort that's happening with your project.
Even if you had local backups, do you make sure that your backup device is not connected to any source of power or plugged into anything that has a source of power? What happens if lightning strikes and your "backup" flashdrive is still connected to your computer even though you aren't using it at the moment? What happens if you had an SD card in your computer at the time? An external hard drive? Forget about your internal hard drive, that's fried. The answer is that everything is fried, and possibly your CD inside your CD/DVD-ROM drive too if you get a hard enough jolt (though if that happens, you've probably got more to worry about than your data...)
And, finally, what happens if the worst were to occur? Some terrorist builds and lets off an EMP and destroys all your (along with everyone else's) electronics? Sure, you're gonna have more to worry about than your data, but still. I actually happen to have flash drives inside a tin (which *should* shield against that sort of thing) for that very purpose. Call me paranoid, but I like to have data intact, and I'm sure you do too. Plus, you're not going to lose those flash drives if they're in something large enough to be seen in the room, so you get that benefit. I mean, what good is a backup if you can't even find it?
tl;dr: Have convenient off-site backups in multiple geographic locations. Make your on-site backups disaster-resistant. Just in case the world ends. If you're paranoid, choose the four corners of the world as your backup sites. And your bank's safe-deposit box.
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Also it's always good to backup outside your home too. Imagine you got backups on CDs, flash drive, computers, calculators, but then a tornado or hurricane tear everything apart?
If that were to happen, then youd have a lot more to worry about than a calc game you were working on. :P
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New England rarely has natural disasters. Well, there was Irene, but still... :P
I still keep a backup in dropbox
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Also it's always good to backup outside your home too. Imagine you got backups on CDs, flash drive, computers, calculators, but then a tornado or hurricane tear everything apart?
If that were to happen, then youd have a lot more to worry about than a calc game you were working on. :P
It depends. For some people the latter is much more important. O.O (Although in some cases, if someone loses 2 years of hard work on something that is hardly re-creatable it can hurt so much that only losing a close person could be worse for him)
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I once lost the scrolling part of my rpg, luckily I could recreate it, since then I ALWAYS back up my progress.
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I once got a ROM clear, but only because my brother was being stupid :P
I lost most everything :(
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I personally keep everything in many places. To me everytging in my house is replaceable(except life of course) except my programs. So i keep everything on drop box.
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So...you have like two beds? O.o
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So...you have like two beds? O.o
Yeah, and he has a third one on DropBox in case of alien attack.
In my case, backing up everithing in the calc data wasn't enough when I lost my calc. :S
I should save the stuff on my computer but i'm too lazy.
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I once got a ROM clear, but only because my brother was being stupid :P
I lost most everything :(
I once had that happen for the same reason too but I recovered it with the archive undelete program
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No i mean with money i can replace everything. Programs cant be bought back and all the hard work is lost. And not that is matters, but yes i have 2 beds , one is in storage.
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i program 84 basic on the Nspire emulater, and once when it crashed the cursor was offset like a quarter of an inch into the screen
i had to turn it off to fix it. it was a good thing that i had archived my programs.
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I lost most everything :(
/me lost the game from reading this x.x
And well said Aes_Sedia5 (welcome to the forums by the way). Sometimes people claim if you lose an entire game it's not the end of the world, but when someone devoted 100 hours of work into something and it came from his inspiration that he had to get out as soon as possible before losing his ideas, it sucks when everything gets deleted. This is why Illusiat 4 is not available online. I lost all 4 games during the Illusiat 2002 crash, but the graphics in Illusiat 4 were just un-recreatable, unlike the three previous games, so as a result the first 3 games were re-created, but not the first. Your motivation takes a huge hit after losing a lot of progress too.
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I can imagine. That would suck to lose everything
Also, darn you DJ_O you made me lose
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The worst part however was really the loss of Illusiat 2002, because I had spent 2 months on it, 10 hours a day for an entire week once due to chicken pox and about 5-6 for the others, only to see the 79 KB large RPG (split into chapters) disappear through a MirageOS crash.
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BUMP:
Keep your backups safe. Preferably have two backups at different locations at once, so if you bring one with you (eg: a calc), then if you lose it, you still have a copy at home (and online if you got 3 backups)
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I know the Perfect place to put you'r online backups: omnimaga.org forums >:D
Nobody would mind getting near constant updates to projects they follow closeley :thumbsup:
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A better place, though, once your project reaches final state, is http://www.omnimaga.org/index.php?action=downloads;cat=44 . That way it gets extra visibility :P (and of course ticalc.org as well, for even more visibility)
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But seriousley, just use a server like withg or 57o9 or a own one (do all three) :P
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Are you sure about 57o9?
I tend to just use Dropbox for my online backups
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The worst thing I can suggest for any developer is to spend a long time writing a VERY promising program (I mean, this could'dve been published it was so dang good...) and then to test on the calculator without having backed up.
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Yeah, I usually archive it and getting a corrupted archive is rather unlikely.
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Well it depends: Just avoid using groups (ERR:VERSION). Archive corruption is rare indeed, but it's always good to backup on the computer from time to time (just make sure to not delete your calc copy afterward before testing it on an emulator in case the PC version is corrupted, because that can happen during TI-Connect transfer)
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So glad I'm backing up daily, else I would have lost quite some data today (stupid windows formatting the wrong partition)