Can't mount cdrom to extract images

kendew · 2021-02-09 20:46:59

Recently I received a number of (older) 650 Mb CD-Rs that contain photos. I need to extract the photos that were saved to these disks about 15 or more years ago. I am using Openbox but also have LXQt installed. A few of these CDs mount with no problem. Udiskie reports they've been mounted to /dev/sr0 and they appear graphically in pcmanfm-qt for easy access. However, I am having no luck with most of these disks. If I use the command recommended in the wiki:

mount -t iso9660 -o ro,loop /dev/sr0 /mnt/cdrom

I get the error:

mount: /mnt/cdrom: wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error

.
This error makes for an easy search string, and search results have produced quite a few suggestions. Following various suggestions I've tried installing multipath-tools, cdrtools, udftools, furiusiso, well as gui apps like acetoneiso2, gnome-disk-utility, dolphin, k3b and others, but nothing has worked.
So I'm wondering if anyone in this august community can tell me what I might be missing. If it's important, I believe these CDs were created with MacOS tools, but I don't have any Apple computers available.
Thanks

Slithery · 2021-02-09 21:03:31

Were they finalised after writing?

kendew · 2021-02-09 23:03:59

Slithery, I'm not sure. I don't know which program created them. I can't get much info as they were made so long ago. The only thing I can gather is that they were created on a MacBook Pro of that day. And that some work and some don't. Some of the pictures on them might be useful to a design project I'm working on so I'd like to get at them.

Here is some new info from one of the CDs for anyone who might be able to interpret it:

isoinfo dev=/dev/sr0
Setting input-charset to 'UTF-8' from locale.
**BAD RRVERSION (0) in '  ' field 00 00.
CD-ROM is NOT in ISO 9660 format

Isovfy gives

isovfy dev=/dev/sr0
Root at extent 0, 0 bytes
[0 0]
No errors found

Perhaps Apple devices in those days used a different format??

Last edited by kendew (2021-02-10 02:22:18)

seth · 2021-02-10 09:03:52

What do the good disks mount as? UDF?
Also watch dmesg for IO errors.
You could try testdisk/photorec in case this is an "about 15 or more years ago" issue.

kendew · 2021-02-12 01:42:08

The good disks mount as ISO9660. The ones that don't mount seem to be HFS according to what testdisk reports:

Disk /dev/sr0 - 669 MB / 638 MiB - 327087 sectors (RO)                                
Analyse sector      229376/327086: 70%                                                
Read error at 168980/0/1 (lba=168980)                                                 
                                                                                      
  HFS                       117928     118647        720 [Install Disk 1]             
  HFS                       118654     119373        720 [Install Disk 2]             
  HFS                       119380     120099        720 [Install Disk 3]

This is getting to look like it's more trouble than it's worth, so I'm putting it on the back burner for the time being.
Thanks for the help. Appreciate the suggestions -- I've learned something new.

seth · 2021-02-12 08:09:23

This looks more like testdisk found three HFS floppy images on the disc?

qinohe · 2021-02-12 12:48:28

kendew wrote:

The ones that don't mount seem to be HFS..

While Arch don't support HFS OOTB(obviously) you installed hfsutils[AUR]?
I don't know if it'll work but probably your best chance.

seth · 2021-02-12 14:19:52

modinfo fs_hfs
modinfo fs_hfsplus

qinohe · 2021-02-12 16:25:10

Hmm, so kernel support it default, nice, because I checked;-)

cat /proc/filesystems

Arch Linux

#1 2021-02-09 20:46:59

Can't mount cdrom to extract images

#2 2021-02-09 21:03:31

Re: Can't mount cdrom to extract images

#3 2021-02-09 23:03:59

Re: Can't mount cdrom to extract images

#4 2021-02-10 09:03:52

Re: Can't mount cdrom to extract images

#5 2021-02-12 01:42:08

Re: Can't mount cdrom to extract images

#6 2021-02-12 08:09:23

Re: Can't mount cdrom to extract images

#7 2021-02-12 12:48:28

Re: Can't mount cdrom to extract images

#8 2021-02-12 14:19:52

Re: Can't mount cdrom to extract images

#9 2021-02-12 16:25:10

Re: Can't mount cdrom to extract images

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