I've a shiny new Ubuntu 11.04 installation. In addition to the system disk, I've added a 2TB drive (/dev/sda) for data.
System monitor reports 1419.5 GiB "Free" and 1326.3 "Available".
Reading around the web leads me to believe that the system is reserving this ~6% as "root reserved space"
Well, I don't think I want "root reserved space" on a pure data disk, so I tried the oft suggested:
tune2fs -m 0 /dev/sda
on the drive only to receive:
tune2fs 1.41.14 (22-Dec-2010) tune2fs: Bad magic number in super-block while trying to open /dev/sda Couldn't find valid filesystem superblock
The filesystem is ext4 and the partitioning is somehow "GUID" (<- Not familiar with this one)
The mighty Google was little help. Can anyone out there tell me how to eliminate the "reserved space" on this new data drive?