Phil's Site

I've been wondering why the new kernel on my dedicated server wouldn't boot. Everytime it started up it would get this far:

[ 3.289050] md: Skipping autodetection of RAID arrays. (raid=autodetect will force)
[ 3.296740] Root-NFS: No NFS server available, giving up.
[ 3.302152] VFS: Unable to mount root fs via NFS, trying floppy.
[ 3.308429] VFS: Cannot open root device "md2" or unknown-block(2,0)
[ 3.314783] Please append a correct "root=" boot option; here are the available partitions:

What I hadn't noticed is that there's a new configuration option in the kernel which enables or disabled RAID autodection. The option is located:
Device -> Multiple devices driver support (RAID and LVM)-> Autodetect RAID arrays during kernel boot
Saying No or unticking the box disables the autodetect; saying Yes or ticking the box enables it.