optical drive and hard disk partition scheme

forusword · 05-09-2010, 03:22 AM

When I issue the mount command, even if there is a disc in my DVD/CD combo drive, I can't see where the device is mounted.

Here is the output of the mount command. Another oddity in it is that I only have two partition on sda, and I was thinking that / and Swap would be configured as partitions 1 and 2 not 2 and 3? Is 1 the boot loader then?

mount
/dev/sda2 on / type ext4 (rw,acl,user_xattr)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
debugfs on /sys/kernel/debug type debugfs (rw)
udev on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,mode=0620,gid=5)
/dev/sda3 on /home type ext4 (rw,acl,user_xattr)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

My thinking is that boldface is swap and / respectively and italics is all loaded to / on sda3? Is this correct? Why can't I see my optical drive as a mounted device with or without a disc?

smoker · 05-09-2010, 03:29 AM

mount mounts all the files systems that are mentioned in fstab.

So unless you have a line for the cdrom in fstab, mount (with no options) is not the command you want.

catkin · 05-09-2010, 03:38 AM

From the mount man page

Code:

              Three forms of invocation do not actually mount anything:
              [snip]
              mount [-l] [-t type]
                     lists  all  mounted  file  systems (of type type).  The option -l adds the (ext2, ext3 and XFS) labels in this listing.

So mount with no options lists the mounted file systems as illustrated in the OP.

Music and video CDs and DVDs do not need to be mounted to be played. Music CDs and DVDs do not have a file system type that is normally supported by Linux so cannot be mounted.

Swap partitions do not contain file systems so cannot be mounted. To display the swap partition use fdisk -l.

forusword · 05-09-2010, 03:54 AM

Thanks catkin & smoker!

forusword · 05-09-2010, 03:55 AM

@smoker....what are you trying to get to know people?

Quote:

I've been doing this for over a decade...let go of the soda !

linux smoker is online now
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smoker · 05-09-2010, 04:32 AM

Sorry, I was thinking of mount -a

mount by itself :

Code:

The  programs  mount  and  umount  maintain  a list of currently
mounted filesystems in the file /etc/mtab.  If no arguments  are
given to mount, this list is printed.

mifi2909 · 05-09-2010, 07:46 AM

Quote:

Originally Posted by forusword

mount
/dev/sda2 on / type ext4 (rw,acl,user_xattr)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
debugfs on /sys/kernel/debug type debugfs (rw)
udev on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,mode=0620,gid=5)
/dev/sda3 on /home type ext4 (rw,acl,user_xattr)
fusectl on /sys/fs/fuse/connections type fusectl (rw)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)

My thinking is that boldface is swap and / respectively and italics is all loaded to / on sda3? Is this correct?

No it is not. You have two lines in bold. The first one (/dev/sda2) is the root filesystem. (Although not completely correct, in popular WinSpeech that would be C: )
The second one (/dev/sda3) is /home which is where all the personal files of the users are. (In WinSpeech that would be 'Documents and settings')
Swap is never mounted because it does not contain a filesystem. Linux is not using a swap file, but a swap partition.

You CD is probably mounted under /media or something like that. That is where it is in Ubuntu.

m