Well, if it can mount the drive then that's half the battle there. The first guess off the top of my head is that it's mounted with permissions that won't allow a normal user to access it. I'm brilliant, aren't I?
I had a similar issue with the drives I share with my Windows partition, so I had to go into fstab and change the permissions. You might want to post the line you have in your /etc/fstab and see if it sheds some light on anything.
My Linux partitions are all mounted with: /dev/hda5 / ext3 defaults 1 1
but I had to force a user ID and group ID for my mounting options: /dev/hdb6 /win_data vfat uid=1000,gid=100,rw 1 0
You can determine your user ID and group ID by typing "id" at the command prompt. Of course, that'll only work for you as the specific user, but it's a start. You might be able to replace it with something like gid=users or somesuch (never tested, never researched), but I got lazy as I'm the sole user...
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I had a similar issue with the drives I share with my Windows partition, so I had to go into fstab and change the permissions. You might want to post the line you have in your /etc/fstab and see if it sheds some light on anything.
My Linux partitions are all mounted with:
/dev/hda5 / ext3 defaults 1 1
but I had to force a user ID and group ID for my mounting options:
/dev/hdb6 /win_data vfat uid=1000,gid=100,rw 1 0
You can determine your user ID and group ID by typing "id" at the command prompt. Of course, that'll only work for you as the specific user, but it's a start. You might be able to replace it with something like gid=users or somesuch (never tested, never researched), but I got lazy as I'm the sole user...