kernel panic at reiserfs partition...
 

I just building the kernel 2.6.8.1 on a freshly formated reiserfs patitions:

hda5-ext3-/boot
hda6-reiserfs-/
hda7-swap
hda8-reiserfs-/usr

at boot, i got following kernel panic:
VFS: Cannot open root device "hda6" or unknown-block (3,6)
Pleae append a correct "root=" boot option
Kernel panic: VFS: unable to mount root fs on unknown-block (3,6)

my boot option from grub is:
root (hd0,4)
kernel /vmlinuz-2.6.8.1 root=/dev/hda6

Please help?

I made sure that reiserfs support (and other fs) are compiled into the kernel.

If you have not compiled reiserfs support into the kernel, you may need to create a initrd file.

Are your HD drivers in your kernel as well?

Those two things are the most important. Be sure that the reiser support is compiled in, not a module. Be sure the IDE driver for your disk controller is loaded and that the "Generic PCI IDE controller" is not. You may need to check to be sure that devfs is enabled as well.

Are your partitions labeled correctly in /etc/fstab?