I have the Slackware 9.1 with XFS filesystem support, but I get error while boot with bootdisk (lilo installation fails, claims that error while try to install lilo...freak). Is it the / and /boot partition must be both ext2 filesystem and set bootable in order to works? because whenever I try to format all the partition as XFS filesystem, the system not even succeed to mount the root fs:
I boot the xfs.s kernel to begin the installation, and partition the hard disk with the following condition:
Is there anything wrong with the partition? I get the following whenever I set the / and /boot fs as ext2:
any idea?

i had the same problem with reiserfs,

all i did was rebuild the kernel with the normal config plus reiserfs and it booted, from there i then added in the things i needed like usb and things.

my thought was that when the kernel was building it messed up some where along the way.

if that failes then try doing make mrproper in /usr/src/linux or where ever your kernel source is.

Yes, the problem is that these filesystems need to be compiled into the kernel, otherwise linux won't be able to mount them, and hence can't mount root fs.