On Fri, Sep 28, 2007 at 07:41:08PM +0100, Alan Cox wrote: > > thought this might be because the SATA interface needed to be switched > > to AHCI mode but on doing this the disks are no longer visible at all at > > boot time so the system refuses to even start booting. > > AHCI is the best mode but you then need the AHCI drivers to be in the > initrd for booting. > > > > So I have set the SATA disks back to IDE mode, and noticed that my old > > Slackware installation still boots (using the grub loader installed by > > Fedora!). Why does my Slackware still boot when Fedora can't seem to > > see the disks at all? > > What does slackware report the disk controller in question as ? Well I'm still a bit confused but I have got things working again. The AB9 Pro latest BIOS (version 21) doesn't seem to detect the SATA disks when you switch to AHCI so the disks "weren't there". Going back to the previous BIOS (version 20) ha fixed the problem. I now see the BIOS message about the Intel drivers for the SATA disks and Fedora boots again without problems. What I really don't understand is how Slackware continue to work without the Intel drivers being there. Moral of the story is - don't upgrade the BIOS unless you *know* it fixes something! :-) I was just hoping it might address my stability problem. Anyway I have got the "latest but one" BIOS which is a lot newer than the one that was there before. -- Chris Green