Where is the "pysdm" package?

Solution 1:

Avoid using pysdm for now.

It's been removed from the Ubuntu archives for a reason:

please remove Pysdm from Ubuntu repositories. It is obsolete (not updated since June 2006 !!), buggy (https://bugs.launchpad.net/ubuntu/+source/pysdm) , doesn't handle UUIDs (which is now fstab standard in all supported Ubuntu versions !!!) and it has already been removed from Debian repositories.

I would suggest to find an alternative for using in recent Ubuntu releases. Also consider reporting this to LifeHacker.

Solution 2:

Try Disks on dash (or gnome-disks on terminal) as suggested here, worked very fine as alternative to pysdm

This same info is also here.