cant read some old cdr's need suggestions

[supradrvr]

I have a collection of some cdr's that I burned about 6 years ago. They have some important data on them that I need and I am having trouble reading some of them. Some of the cdrs will read a few files then stall. Some of the discs are memorex brand and some are generic. I was wondering if there is a special way I could mount them to be able to retrieve the data. I have tried all of the spare cd drives I have laying around and even bought a new one. I may just be out of luck but before I give up I thought I would see if anybody had a thought. Here is my current fstab

/dev/hda1 /boot ext2 defaults,noatime 1 2
/dev/hda2 none swap sw 0 0
/dev/hda3 / ext3 noauto 0 1
/dev/hdb1 /data ext3 defaults,users 1 2
/dev/hde1 /data2 ext3 defaults,users 1 2
/dev/hdf1 /data3 ext3 defaults,users 1 2
/dev/hdg1 /data4 ext3 defaults,users 1 2
/dev/hdc /media/cdrecorder auto users,exec,noauto,managed 0 0
/dev/hdd /media/cdrecorder1 auto users,exec,noauto,managed 0 0
/dev/fd0 /media/floppy auto rw,user,noauto,exec,umask=000 0 0
/dev/sda1 /media/usbstick auto rw,user,noauto,exec,umask=000 0 0

# NOTE: The next line is critical for boot!
proc /proc proc defaults 0 0

# glibc 2.2 and above expects tmpfs to be mounted at /dev/shm for
# POSIX shared memory (shm_open, shm_unlink).
# (tmpfs is a dynamically expandable/shrinkable ramdisk, and will
# use almost no memory if not populated with files)
shm /dev/shm tmpfs nodev,nosuid,noexec 0 0



I did change the cdrecorder line to just users,noauto,ro 0 0 but it did not help any. Thanks for any input.

[yaneurabeya]

First off, I'd think that those are iso9660 compatible (do you have that built into the kernel by chance?). Overall, if you're having troubles just reading the discs beyond a certain number of files, it may be time to just find a really old junky cd burner and just use it for the purposes of backing up your files. If that isn't the case, I'd just dd the disc to an ISO or something, reburn it, and/or just mount the sucker.

If all else fails, just find a windows machine and see if you can copy your files off that way.

Best of luck.

[supradrvr]

I dont have any problems reading any other cd's, just these old ones. The problem is that the data thats on them is not any place else. They were my master backups. I did take one to work today and tried them on a 98 box and a win2k box. The 98 box gave me unable to read device errors and the 2k box gave me incorrect m$-dos function. So I think I am just plan hosed. I just that mabe there was some other mounting tricks for cds that were hard to read.

[gtbX]

cdrs don't have anywhere near their advertised shelf life.

I don't know if cdparanoia can work on data cd's, or if there is an equivalent program. You might want to try some of the programs installed with cdrtools, eg: readcd, dumpiso. They might have a better chance of recovering some or all of the data.