I have compiled the kernel 2.4.22-1.2129.nptl for adding ntfs support. Everything was OK, and the following lines werw added to the grub.conf: title Fedora Core (2.4.22-1.2129.nptlcustom) root (hd1,0) kernel /vmlinuz-2.4.22-1.2129.nptlcustom ro root=LABEL=/ hdd=ide-scsi rhgb initrd /initrd-2.4.22-1.2129.nptlcustom.img The problem is that when booting with the new kernel, I have the error message: VFS: Cannot open root device "LABEL=/" or 00:00 The problem is solved changing (in the grub.conf) 'root=LABEL=/' by 'root="/dev/hdb2"' (is where my / is), but I would like to know the reason and why this problem doesn't appear with the old kernel. Thanks in advance.