hard disk space does not match !

[emretemp]

I opened a thread but I think it was on the wrong place. Anyway I have a problem with harde disk space, here it is:



I got a new server and checked for empty space after isntalling some stuff. here is the result:

debian:/var# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             455G   47G  385G  11% /
tmpfs                1010M     0 1010M   0% /lib/init/rw
udev                   10M  632K  9.4M   7% /dev
tmpfs                1010M     0 1010M   0% /dev/shm
/dev/sda1              92M   15M   73M  17% /boot

and here are the values in byte format:

debian:/var# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda3            476782708  49191356 403372160  11% /
tmpfs                  1033900         0   1033900   0% /lib/init/rw
udev                     10240       632      9608   7% /dev
tmpfs                  1033900         0   1033900   0% /dev/shm
/dev/sda1                93307     14392     74098  17% /boot

as you can see,
hdd size does not match with avaible + used size match.

check to sum of the sizes, for example look at / partition
used space: 47 GB + avaible space: 385 GB = 432 GB
and this number does not match partition size, which is is 455 GB.

how can this happen and why does that seem to be given wrong information?



any ideas on this subject?

thx in adv.

[coopstah13]

5% of space is reserved for root in case disk runs out of space, system won't get hosed, 5% of 455 is 22.75, 455-22.75 = 432.25

[emretemp]

thank you sir.

I wa worried about my hdd, thought something was wrong with it.
now I see its all normal.

thank you again.