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Old 09-03-2004, 12:40 PM   #1
SpartacusJones
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Cannot read a CD of jpegs in Mandrake 10!


Hi, I've tried to find an answer to this elsewhere, but with no luck.

I recently got rid of Windows XP from my computer and inmstalled Mandrake 10., and during the process, I lost a bunch of my son's pictures which I had...um...neglected to burn to a cd.

Fortunatley, my wife had emailed most of them to my parents already. My dad burned a bunch of jpegs to several cd's for me on his Win XP system, using Roxio Easy CD Creator 6. When I put the cds in my Mandrake machine, nothing happens. I browse to the /mnt/cdrom and there is nothing there.

This does not happen if I put in a music cd- it begins to play automatically.

Is there something Roxio does that Linux doesn't recognize, or is there a step I'm missing? I looked at the CDs in Windows Explorer on Dad's computer, and all that is on them are the jpegs.

Thanks,

Chris
 
Old 09-03-2004, 12:56 PM   #2
netcrawl
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May seem to be a dumb question, but did you mount the cdrom? Your post doesn't mention it, and sometimes a simple answer can be easy to miss.
 
Old 09-03-2004, 12:58 PM   #3
SpartacusJones
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Well, I have not mounted it, but it does play music cds automatically. I can browse through KDE to the mnt/ directory, where I can see the cdrom icon. Does that mean it was mounted automatically?
 
Old 09-03-2004, 01:02 PM   #4
pongmaster
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Did you mount your CD-Rom?
Just because the folder is there, doesn't necessarily mean your CD-Rom is mounted.

All depends on which Roxio program was used to create the CD. There's an application called 'Direct CDN' that comes with Roxio EasyCD which formats a CD to some strange format that only Roxio's Direct CDN can open. Direct CDN is a 'drag n drop' type tool - you don't use the standard ECD interface. It formats a 700Mb CD-R down to something around the 570/600Mb mark and they're completely unreadable to anything but the Roxio CDN program.

EDIT Damn, there are some fast typers out there.

Last edited by pongmaster; 09-03-2004 at 01:04 PM.
 
Old 09-03-2004, 01:05 PM   #5
vinay_s_s
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do mount /mnt/cdrom or select devices tab in konqueror (KDE) and select the appropriate cdrom device- it will list stuff
 
Old 09-03-2004, 01:12 PM   #6
netcrawl
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Try "mount /dev/cdrom" as su or root, (without the quotes)
 
Old 09-03-2004, 02:00 PM   #7
J.W.
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netcrawl is correct -- you don't need to mount a music CD, but you do need to mount a data CD. Assuming that the photos were transferred successfully onto the CD, you should be able to view them immediately after you perform the mount command.

This is another opportunity to remind everyone to always make backups -- J.W.
 
Old 09-03-2004, 03:53 PM   #8
esteeven
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Shouldn't Mandrake use "Supermount" to mount cds?
 
Old 09-03-2004, 04:12 PM   #9
SpartacusJones
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Using the command line "mount /dev/cdrom" line- from where do I do it? the top directory? Does it matter?

Thanks everyone for the help btw
 
Old 09-03-2004, 04:18 PM   #10
SpartacusJones
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When I tried it (as su) from the top directory, this is what I got:

mount: can't find /dev/ide/host0/bus1/target0/lun0/cd in /etc/fstab or /etc/mtab

Can anyone translate?
 
Old 09-03-2004, 04:22 PM   #11
superbondbond
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Quote:
Originally posted by pongmaster
All depends on which Roxio program was used to create the CD. There's an application called 'Direct CDN' that comes with Roxio EasyCD which formats a CD to some strange format that only Roxio's Direct CDN can open. Direct CDN is a 'drag n drop' type tool - you don't use the standard ECD interface. It formats a 700Mb CD-R down to something around the 570/600Mb mark and they're completely unreadable to anything but the Roxio CDN program.
Direct CD uses UDF(packet writing) to format the CDs for drag and drop. Linux can read UDF filesystems. I've mounted direct CD written discs before. It's simply a matter of specifying the filesystem (if your kernel supports it of course).

mount /dev/cdrom -t udf /mnt/cdrom

Last time I checked the UDF-write capabilities in Linux were still under developments (things might be different now though). That's one thing I really do miss about running Windows.
 
Old 09-03-2004, 04:40 PM   #12
SpartacusJones
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When I tried what superbond posted, I got this:

[root@localhost cdrom]# mount /dev/cdrom -t udf /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
or too many mounted file systems

I tried it in another place::

[root@localhost chris]# mount /dev/cdrom -t udf /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/cdrom,
or too many mounted file systems

and got the same thing. I suppose the best thing to do then is burn the cds again but not in Roxio? Or will I have the same problem no matter what is used?

I could also reinstall windows on a partition, save the pictures there, and mount the windows partition from Mandrake.
 
Old 09-03-2004, 05:01 PM   #13
superbondbond
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they may very well be standard CDs (iso9660 filesystem). try that before you do anything drastic.

mount /dev/cdrom -t iso9660 /mnt/cdrom
 
Old 09-03-2004, 05:46 PM   #14
pongmaster
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Quote:
Originally posted by superbondbond
Direct CD uses UDF(packet writing) to format the CDs for drag and drop. Linux can read UDF filesystems. I've mounted direct CD written discs before. It's simply a matter of specifying the filesystem (if your kernel supports it of course).

mount /dev/cdrom -t udf /mnt/cdrom

Last time I checked the UDF-write capabilities in Linux were still under developments (things might be different now though). That's one thing I really do miss about running Windows.
That's a really cool bit of info to know.
I searched for answers to this problem a while ago and came up empty.
Thanks for that.
 
Old 09-03-2004, 06:02 PM   #15
Electro
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If you do not know the filesystem you can type

mount -t auto -o ro,unhide /dev/cdrom /mnt/cdrom

However, you should not use symbolic links to use as the device. You should use the real device. It could be /dev/hdc, /dev/sd0, or anything.
 
  


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