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Modifying Grub installed via fc8 to accomodate my new gentoo?

Hey,
I just installed gentoo and since i already had grub installed earlier thru fc8, I asked the installation to skip the bootloader. i went into fc8 then and made changes to grub. the root of gentoo is on /dev/sda5. the following changes are what I added to grub

Code:

        title Gentoo (2007.0)

        root (hd0,4)

        kernel /boot/kernel-genkernel-x86-2.6.19-gentoo-r5 root=/dev/sda5

When I try booting into gentoo, everything goes fine until it suddenly says that it is unable to load VFS onto block (0,0) and that sda5 does not exist. Goes into kernel panic with a message saying i should provide a valid name after root=

Any ideas?

Thanks.

genkernel requires an initrd.
The doco should have mentioned that - although I've never bothered with genkernel. If you're going to run gentoo, you'd better get in the habit of reading the (exceptional) documentation provided.