Recover data from CDROM (cannot mount it)

[daniel3ub]

Hi, people.

I have a couple of old CDROMs that I need to read the data from.

The problem is that Ubuntu tries to auto mount the media and after a few seconds it recognizes the CD as a blank CD.

Then I've tried

ddrescue -b 2048 --no-split /dev/cdrom rescue/ddrescueIMG ddrescueLOG

(as seen here: http://www.forensicswiki.org/wiki/Ddrescue)

I returns me

ddrescue: cannot open input file: No medium found

if I run the above command while the system is trying to mount the CD. After it is (wrongly) identified as a blank CD, the above command executes for hours, saying:

Press Ctrl-C to interrupt
Initial status (read from logfile)
rescued:         0 B,  errsize:    4096 B,  errors:       1
Current status
rescued:         0 B,  errsize:    641 TB,  current rate:        0 B/s
   ipos:   641276 GB,   errors: 1195172050,    average rate:        0 B/s
   opos:   641276 GB

note the "rescued: 0B".

Please, what can I do to recover this CD?

Thanks a lot!

[jtarin]

What is the data type on the CD? Were these made on the same machine? Have your tried to copy with an application such as K3B or Gnome Baker?

[scorchgeek]

If the CD needs to be unmounted, do

sudo umount /dev/cdrom

.

But many CDROMs are not on /dev/cdrom. Can you post the output of

mount

after the "blank" CD has been mounted? (Or you could look at the list yourself and find the listing that looks like a CDROM.)

[JustinR]

Try Dvdisaster, its in the software center. It doesn't need a CD to be mounted to retrieve data off of it.

[jtarin]

If the CD needs to be unmounted, do

sudo umount /dev/cdrom

.

But many CDROMs are not on /dev/cdrom. Can you post the output of

mount

after the "blank" CD has been mounted? (Or you could look at the list yourself and find the listing that looks like a CDROM.)

Actually

eject -n

will give more useful info

[scorchgeek]

Actually

eject -n

will give more useful info

Thanks, never heard of that. Do that instead.

[daniel3ub]

What is the data type on the CD? Were these made on the same machine? Have your tried to copy with an application such as K3B or Gnome Baker?

The CD was burned in a Win (probably 98) machine. The data is mostly jpg and tiff images, with some Corel Draw and MP3 files, and even maybe some AVI and MPEG.

Tried to copy it with Brasero with no joy. It tells me "No disk to copy" and considers it as a blank disk.

K3B tells me "The source disk is empty" and finishes with error

System
-----------------------
K3b Version: 1.0.5

KDE Version: 3.5.10
QT Version:  3.3.8b
Kernel:      2.6.28-19-generic
Devices
-----------------------
TSSTcorp CD/DVDW TS-L632M 0A17 (/dev/sr0, ) [CD-R, CD-RW, CD-ROM, DVD-ROM, DVD-R, DVD-RW, DVD-R DL, DVD+R, DVD+RW, DVD+R DL] [DVD-ROM, DVD-R Sequential, DVD-R Dual Layer Sequential, DVD-R Dual Layer Jump, DVD-RAM, DVD-RW Restricted Overwrite, DVD-RW Sequential, DVD+RW, DVD+R, DVD+R Dual Layer, CD-ROM, CD-R, CD-RW] [SAO, TAO, RAW, SAO/R96P, SAO/R96R, RAW/R16, RAW/R96P, RAW/R96R, Restricted Overwrite, Layer Jump]

Thanks for your kind help, anyway.

[daniel3ub]

But many CDROMs are not on /dev/cdrom. Can you post the output of

mount

after the "blank" CD has been mounted? (Or you could look at the list yourself and find the listing that looks like a CDROM.)

..~/ > mount
/dev/sda5 on / type ext3 (rw,relatime,errors=remount-ro)
tmpfs on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
varrun on /var/run type tmpfs (rw,nosuid,mode=0755)
varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777)
udev on /dev type tmpfs (rw,mode=0755)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=620)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
lrm on /lib/modules/2.6.28-19-generic/volatile type tmpfs (rw,mode=755)
/dev/sda2 on /media/Outros type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)
none on /proc/bus/usb type usbfs (rw,devgid=1001,devmode=666)
securityfs on /sys/kernel/security type securityfs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/daniel/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=daniel)

Couldn't figure out which one is the CD

[daniel3ub]

Try Dvdisaster, its in the software center. It doesn't need a CD to be mounted to retrieve data off of it.

As the dvdisaster's manual says: "So if you have a defective medium but never created ecc data for it - sorry, your data is probably lost." and "So if you have a defective medium but never created ecc data for it - sorry, your data is probably lost."

Thanks for the try, anyway.

[jtarin]

Your cdrom drive is /dev/sr0