Very Computer

1. Missing 10gb after mke2fs on LaCie 120gb ext drive

Hi, I have installed a LaCie 120gb D2 drive under firewire on RedHat 8.
When the drive is fired up on startup, dmesg reports:

SCSI device sda: 234441648 512-byte hdwr sectors (120034 MB)
sda: sda1

Perfect.

But, after formatting the drive using fdisk and mke2fs, when I mount the
drive, df reports:

Filesystem ??????????1K-blocks ?????Used Available Use% Mounted on
/dev/sda ????????????115380224 ???????20 109519164 ??1% /data

If a 120gb drive has 128849018880 bytes (120 * 1073741824)
it seems to me that I've lost nearly 10gb on this drive after formatting
(115380224 blocks = 118149349376 bytes which is 110.04gb).
fdisk /dev/sda displays the following when printing the table:

Disk /dev/sda: 255 heads, 63 sectors, 14593 cylinders
Units = cylinders of 16065 * 512 bytes

??Device Boot ???Start ??????End ???Blocks ??Id ?System
/dev/sda1 ????????????1 ????14593 117218241 ??83 ?Linux

All this doesn't make sense to me... are my calculations wrong?

Also, when I share the mounted drive on samba, and connect
to it on my mac, the mac reports that the drive only have 104gb
remaining, which is even worse....

Is this just a case of invalid calculations/reporting or have I
really lost between 10 and 16 gb of space after formatting
and making the filesystem?

Thanks!
paul

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