I've installed Debian on a SATA drive in /dev/sda2 (sda1 is NTFS dual boot). The SATA controller is on board. But when I connect my SCSI drives to my Adaptec SCSI host adapter. I'm getting a kernel panic with standard Debian linux-image. Debian boots up without problems if I disconnect the drives.

In short: Linux gives, during bootup, priority to my SCSI drives instead of my SATA drives. If Linux boots up it has my 3 SCSI drives labeled as sda, sdb and sdc and my 2 SATA drives as sdd en sde. While it should be the other way around. I want my 2 SATA drives to be sda and sdb and my 3 SCSI drives sdc, sdd and sde.

Apparently Debian gives priority to real SCSI devices and then mounts the "fake" ones.

The 1 million dollar question is now: How to solve this?

P.S. adding ide=reverse or scsihosts in Grub doesn't work.

I believe it's the System BIOS that is switching the priority not debian..
I run in to the same issues with Windows servers and multiple SCSI Interfaces / drives..

You may be able to prevent the loading of the SCSI controller drivers until the system is up to force the devices to load in the order you want..

Hmmm... any idea where to change that in BIOS? I've already tried to set the boot order different, but it didn't help.

I don't see anything in the BIOS that could help. Isn't it possible to change the devicenames in Linux/Debian?

You cannot change it in the BIOS..

You should however be able to load the SCSI controller driver as a module, and force it to load After the other controller driver. which would give yu the result you are looking for. unfortunately I don't know how to make that happen, but I have seen threads on it in the past..