On Mon, Nov 10, 2014 at 04:31:53AM +0000, Juan R. de Silva wrote:
Hi folks,
I've purchased a new WD Passport 2T USB hard drive, which, no doubts,came
formated NTFS. I've used GParted to quickly format the drive to Ext4 and
results surprised me quite a bit (all results as reported by GParted):
File system NTFS
----------------
Total capacity - 1.82 TiB
Used by file system - 122.66 MiB (?)
This will be space taken up by the MFT, the journal and other file
accounting structures.
File system Ext4
----------------
Total capacity - 1.82 TiB
Used by file system - 29.42 GiB (?)
This will be the space taken up by the superblocks, presumably. This
isn't the "5% reserved" space, which for that drive would be about 93.18
GiB.
I think the problem is that ext4 makes copies of it's superblock every
so often throughout a drive. The bigger the drive, the more copies it
makes.
You could try formatting as XFS or BtrFS and see if the space used is
any better.
....