Hi, I'm trying to understand why extra blocks are added when you create a file in the ext3 fs: for example, let's create a file of 1111 blocks (4096 bytes for each block) $ dd if=/dev/zero of=foo bs=4096 count=1111 the real occupation disk is then: $ du -B 4096 foo 1114 instead of 1111 So where the 3 extra blocks come from? Thanks for help! youness -- Y.