That bug has been opened on https://launchpad.net/distros/ubuntu/+source/gnome-system-tools/+bug/40578

"disks-admin should only list physical devices.
Instead it also shows unionfs, tmpfs, etc. "disks".
I suggest filtering out devices whose name doesn't start with "/dev/".

Tested in Dapper Beta Live CD.
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> Thanks for your bug. Could you make a screenshot of the issue? Could you also run "mount" and copy that to a comment?
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With a Dapper Flight-7 LiveCD running on my laptop (which has 1 hd and 1 dvd-reader):

# cat /etc/fstab
unionfs / unionfs rw 0 0
tmpfs /tmp tmpfs nosuid,nodev 0 0
/dev/hda5 swap swap defaults 0 0

# mount
unionfs on / type unionfs (rw)
proc on /proc type proc (rw)
/sys on /sys type sysfs (rw)
varrun on /var/run type tmpfs (rw)
varlock on /var/lock type tmpfs (rw)
procbususb on /proc/bus/usb type usbfs (rw)
udev on /dev type tmpfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
devshm on /dev/shm type tmpfs (rw)
lrm on /lib/modules/2.6.15-21-386/volatile type tmpfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)

# ls /dev/{s,h,f}d?
/dev/fd0
/dev/hda
/dev/hdc
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http://librarian.launchpad.net/2720415/2-hd_unionfs.png
Looking at /etc/fstab, I think it is the root partition.
It shouldn't be listed.
The partition list on the second tab is empty.
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http://librarian.launchpad.net/2720431/3-hd_tmpfs.png
Looking at /etc/fstab, I think it is /tmp.
It shouldn't be listed.
The partition list on the second tab is empty.
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