Hi. I changend the chunk size in /etc/raidtab and stopped raid with raidstop and recreate the raid partition (using mkraid -R /dev/md0). I start parted in Red Hat 9 using the next command inside a ssh session: parted /dev/md0 (a RAID 0 partition) I have a monitor connected to the linux box and appears the next message: md: parted(pid 9269) used obsolete MD ioctl, upgrade your software to use new ioctls Any idea? Note: I use parted version 1.6.3 relase 11 included in Red Hat 9. The previous /dev/md0 raid partition was created in Gentoo 1.4. Iago