Added second harddrive as a partition, but now the partition size is wrong..

mlsbraves · 08-17-2005, 01:16 AM

I installed a second harddrive(80GB) and I wanted to make this another partition on my system. So I installed the harddrive, fdisked it(Maid the whole drive one primary partition), formated it to ext3, added it to my fstab, and created a folder for it. Everything seemed to be fine but when I looked under properties it says my partition was 73.4GB and (6% used). I can't figure out why the whole drive isnt there.

fdisk print:

Code:

Disk /dev/hdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1               1        9729    78148161   83  Linux

Can someone please help me figure out why the whole size isnt there?

Thanks for your time.

birdseye · 08-17-2005, 04:48 AM

First off, mount /dev/hdb1, go to its root, and 'ls -la' it. That may sound pretty obvious, but may tell you something.

Also, I don't know the details, but when you format a drive, you loose some of the space due to the formatting. This may account for your lost space.

Hope that helps,

Rhys

enemorales · 08-17-2005, 06:32 AM

I've gathered in these forum that ext2 (and ext3) reserves about 5% of the disk to be used by root. This allows it to login and work in case of failure, full disks, etc.

mlsbraves · 08-17-2005, 05:25 PM

Quote:

Originally posted by birdseye
First off, mount /dev/hdb1, go to its root, and 'ls -la' it. That may sound pretty obvious, but may tell you something.

ls -la returns:

Code:

total 8
drwxr-xr-x   2 root root 4096 2005-08-16 21:01 ./
drwxr-xr-x  19 root root 4096 2005-08-17 00:51 ../

Quote:

Originally posted by birdseye
Also, I don't know the details, but when you format a drive, you loose some of the space due to the formatting. This may account for your lost space.

Rhys

I've done this before and its never took that much space. Besides, Not only is it telling me the capasity is wronge but its also saying that 4GB are already used.

Thanks for the help though. Hope I can figure out this problem

WhatsHisName · 08-17-2005, 06:21 PM

You are thinking about drive capacity the way manufacturers quote it, not the way linux or windows sees/reports it.

Do the math:

80026361856 bytes * (1KB / 1024 bytes) * (1MB / 1024KB) * (1GB / 1024MB) = 74.5GB

Pretty close.

mlsbraves · 08-17-2005, 08:10 PM

So by formatting it to ext3 I lost 4GB? I wasnt aware it took up so much space. Thanks for all the help. I appreciate it.