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Distribution: kubuntu dapper (kernel 2.6.15) with XGL
Lost space on HD
I've created (with gparted) a new ext2 partition of 59GB on my hard disk.
I've succesfully mounted on my filesystem but I've noticed a strange thing.
With df I see that there are only 56GB avaible of the total 59GB of the partition even if I didn'n copy any file on it, it's empty but 3GB are used... how is it possibile?
When an ext2/3 filesystem is created by default 5% is reserved for root. This is allows root access the partition in case the filesystem becomes full and reduce fragmentation. You can use tune2fs to change the amount of reserved space.
Because your system reserves 5% for root. Even when the filesystem is full there is some space to root fix the things. This extra space can be used only by root.
You can check it by yourself, with the "tune2fs -l /dev/your-disk-partition-here". Take a look in "Block count" (the total size in blocks), "Reserved block count" (the reserved space in blocks) and "Block size" (the size in bytes of 1 block).