Hi By aplying the patch I got on mingo's site, I can now mkraid and format and so ... but now when mounting the raid5 drive, I get lot of messages like: Jul 17 19:22:38 linux3 kernel: set_blocksize: b_count 1, dev md(9,0), block 134138, from c013d6c2 Jul 17 19:22:38 linux3 kernel: set_blocksize: b_count 1, dev md(9,0), block 134139, from c013d6c2 Jul 17 19:22:38 linux3 kernel: md0: blocksize changed during read Jul 17 19:22:38 linux3 kernel: nr_blocks changed to 64 (blocksize 4096, j 33472, max_blocks 2092416) what the heck does that mean? I have changed the chunksize to 4 -- Javi Polo - [EMAIL PROTECTED] - navo Geek Code available in my home page (es que era mu tocho) http://javipolo.ivworlds.org/