Hello.
You missed the right post. The solution you've tried to apply isn't really working; that's why I searched (and hopefully found) another way to solve the problem. Follow the instructions contained by the right post (
this one) and you might end up solving this 
disappearing act.
Usually, the 
root network shares (
Volume_1, 
Volume_2) appear after pressing the "
Reset Network Shares" button. If they don't and you have no RAID defined, my advice is to downgrade the firmware to 2.02 (best transfer rates) and restore the factory settings (the procedure is 
here).
Can you paste here the results of running the command 
blkid on your NAS (with hidden UUIDs, of course)? It should be something like this:
/dev/loop0: TYPE="squashfs"
/dev/md0: TYPE="swap"
/dev/sda1: UUID="X1" TYPE="linux_raid_member"
/dev/sda2: UUID="X2" TYPE="ext3"
/dev/sda4: UUID="X3" TYPE="ext3"
/dev/sdb1: UUID="X1" TYPE="linux_raid_member"
/dev/sdb2: UUID="X4" TYPE="ext3"
/dev/sdb4: UUID="X5" TYPE="ext2"Good luck.