Hello, I have a KT7 RAID motherboard with two Quantum Fireball harddisk of 20 GB each (ATA66). I attached them to my ATA100 controller and succesfully have run Windows NT and Windows 2000 for a year now. Since I discovered that there was an Open Source driver for linux, I tried that with kernel 2.4.14. I attached two extra disks (Maxtor 60GB) drivers with my Linux system from work to my ATA100 controller to install linux on my own Quantum drives. After some tries I managed to set up a ataraid device on my fireball disks, and could copy my linux distribution (Redhat 7.1) to it (root filesystem is reiserfs). Next, I tried to boot my new system with a floppy, but I could get that to work. When I switched to LILO 22.1, I managed to boot up my new system. Everything worked, very great! But then, when I removed my two Maxtor drives again, LILO works but after detecting the hard drives the kernel hangs without any specific errors (just after reporting ide1=0xd000 or something like that, ide2= etc.) I tried to switch the drive to cable select instead the master jumper but that didn't help. I upgraded KT7 BIOS to the last version, but that didn't help either. Does anyone know why my linux only boots when I attach two (abundant) ATA100 disks? There are no references from my Linux system to these drives. My Windows NT system still boots up perfectly.. Many thanks in advance, Herke Jan Noordmans -- H.J. Noordmans, PhD Postal address: AZU, Room F.01.107 Dep. Of Medical Physics Tel.: 030 2509749 P.O.Box 85500 Fax: 030 2542002 AZU, room E.01.125 E-mail: h.noordmans@xxxxxx 3508 GA Utrecht WWW: http://www.isi.uu.nl:/People/Herke/herke.html The Netherlands