Re: output of df doesn't add up

[Eduardo M KALINOWSKI <eduardo@kalinowski.com.br>]

On Seg, 20 Jul 2009, Micha Feigin wrote:
> For some reason the output for my main disk as given by df doesn't add up:
>
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/sda1             142G  123G   12G  92% /
>
> 142g - (123g + 12g) = 7g
>
> it seems that I have 7gb missing on the disk (its ext4,  just  
> crashed, I think
> because it went to 100% and required fsck from a rescuecd to work  
> again if that
> makes a difference)
>
> Any ideas on where the missing gb are?

It's the space reserved for root.

http://www.andremiller.net/content/recovering-reserved-space-ext2-and-ext3-filesystems


--
Eduardo M KALINOWSKI
eduardo@kalinowski.com.br