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cd exploded in drive, seems to still work, error checking program?

M

MetalDwarf

[H]ard|Gawd
Joined
Jan 20, 2002
Messages
1,072
Hello
i had a cd explode in my liteon 40x burner last night. after taking it apart and pulling out all the busted bits of shatered disk i put it all back together and it still seems to read/burn disks. HOWEVER i dont trust it anymore and i was wondering if there is any software/trick/process/magic trick I can use to test the drive and make sure its not producing errors on either read or write. i use the drive for buisiness backup purposes and the data HAS to be correct. if not i've got a damn good excuse to buy that shiney new 8x plextor DVD writer

thanks
 
As long as you got all of the pieces, and nothing got damaged, it should be fine.

A friend has a 52x drive that had several disks blow up in it. It's toast. :p There are little pieces of disk that appear every now and then from that drive.

Just be sure there isn't anything metal touching or bridging any circuits.
 
Hehe, I saw that done on MythBusters, but they were putting the cds in the microwave first. Believe me, it's a good thing it was covered when it happened. MythBusters had a ballistics dummy in the same room, it had shards of cds going about 4 inches into the body.
 
while an entertaining anacdote it doesnt help me test the validity of the data going in and out of the drive.

for more entertaining cd exploding material im sure most of you have seen the cd+ dremel at 35000 RPM videos ...


i also remember "back in the day" when the first slot load 16x drives came out. some guy had a video of it LAUNCHING disk ala tribes across the room. no link for this though :(

anyone know of any error checking programs to test cdroms?
 
As long as you look at the laser lens and see that it doesn't have any marks or scratches, or even cracks... if it's fine then it wont be a problem.

~Adam
 
Originally posted by CleanSlate
As long as you look at the laser lens and see that it doesn't have any marks or scratches, or even cracks... if it's fine then it wont be a problem.

~Adam
Click to expand...

It will be painfully apparent if it does, ala extensive and constant errors reading and writing. ;)
 
Use Nero and run "data verification" after you burn some big files, that will ck for burn/read errors.
 
I would make sure you got everything out of it. Take it apart then blow canned air into it. Had a WindowXP CD blow up in one of my drives, man that cdrw was dead after that.
 
The moving parts of a CD-ROM (or CDRW) are very simple, and if you get the parts out it's either going to work or it's not, and it will be very apparent either way. In essense for moving parts you've just got a laser (mount), the tray motor, and the spindle for spinning the CD itself. The rest is non-moving circuits, and the chances of bridging something with a shard from a CD is pretty remote.

So if your drive still ejects and takes disks, still spins up, and still reads and writes, suffice it to say it still works. Run a data integrity check if you're worried (couple ways to do it, some CD burning programs have them built in, OR you can do it with large zip files), but if it's reading and burning like you say it is I'm 99% sure it's just working.

By the way, to the fellow who asked how a CD explodes:

It's uncommon, but there are reasons. The main reason would be physical defect in the media itself. Have you got any audio CD's that might have a crack along the outer track, or a crack on the inner transparent mounting area? Those areas are going to stress when the CD is subjected to high speeds, and if the CD 'starts' to go, it's going to go bang :).

Also, some CD drives have vibration issues depending on the quality of the drive and how it's mounted. These vibrations increase the chance of defective media causing a problem.

Erik
 
Originally posted by MetalDwarf
anyone know of any error checking programs to test cdroms?
Click to expand...


There is a program called CDCheck, get it here: http://www.elpros.si/CDCheck/download.php

This will allow you to, after you burn your cds, to verify them as a source to reference check. Just find a directory of files, burn them to a CDR, and then use the CD as the source and the files in that directory as the reference and let it run. If you have another CDROM drive, I would put the CDR you burned in there and test it against the reference as well. If both give you 0 errors, that should tell you that your CD burner is both reading and writing discs properly.

Hope this helps.

SuperG

PS. If you REALLY want to go nuts on checking, you could burn x number of files to a CDR or RW, then copy those files back from that burned CDR into a different directory on your hard drive. Then run an md5 checksum on both sets of files. If they match, that means that the files are IDENTICAL. MD5 uses a sophisticated method, so if the checksums do match, you can be pretty well assured that your CD burner worked correctly. You can do this multiple times, just incase you want to check your burner more. Good Luck.
 
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