Problem : patching the kernel

Hi, I followed Debian_Getting_Started chapter in the wiki. There wasn't any error but, after rebooting, the kernel crashed: Booting 'Debian GNU/Linux, kernel 2.6.27.4' root (hd0,0) Filesystem type is ext2fs, partition type 0x83 kernel /boot/vmlinuz-2.6.27.4 root=/dev/hda1 ro quiet hfcmulti.dslot=1 [Linux-bzImage, setup=0x3000, size=0x1796901] [0.000000] Unknown boot option 'hfcmulti.dslot=1': ignoring [0.796125] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) I tried first to delete "hfcmulti.dslot=1" at the kernel line but still have the second line. After checking the /boot/grub/menu.lst file, I saw that the line initdr was missing for the kernel 2.6.27.4: title 2.6.27.4 root kernel title 2.6.26.2 root kernel initdr In /boot directory, I have initdr files only for 2.6.26.2 and 2.6.26.1. Sorry I am quite weak concerning the kernel. Can anyone help me? Thanks a lot Eric Cathelinaud