[Gllug] Debian file system

[Dan Kolb]

NorthLondon John wrote:

> The last hardware problem I have is with the cdrom. This is acessible by 
> root, but not by any users. It's not a permissions problem - the error I 
> get when trying, eg, to play an audio cd, is:
> 
> mount: wrong fs type, bad option, bad superblock on dev/hdc,
> or too many mounted file systems

If you're playing an audio CD, you shouldn't be mounting it. You'll need 
the appropriate CD playing software. Audio CDs don't have a file system 
on them, hence the 'bad superblock' on it. Can you mount a data CD as a 
user? If not, you may need to put the option 'user' in the appropriate 
place in the fstab file (so the CD options should look like: 'noauto,user').

> In the course of looking into this, I found some oddities with the 
> filesystem:
> 1:  /dev/hdc has two entries in the fstab - /cdrom and /media/cdrom
> 
> 2: fstab has swap on /dev/hda5 - 165mb according to system monitor; 
> kdiskfree doesn't show this, but has tmpfs mounted at /dev/shm (size: 
> 30.4mb, free 30.4mb, Full% 0.0%). What is tmpfs? Is it equivalent to 
> swap? Why don't the numbers add up?

Swap partitions aren't actually mounted to any point on the file system, 
hence kdiskfree doesn't show it (neither will df).

Dan

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