The Kernel

in order to boot from the CD you need some minor kernel modifications. First of all, you have to support the filesystem you boot from (iso9660), and all the pseudo-filesystems (devfs, /dev/pts, proc at least). Of course you need ramdisk support.

CONFIG_PROC_FS=y

CONFIG_DEVFS_FS=y

CONFIG_DEVPTS_FS_XATTR=y

CONFIG_RAMFS=y

CONFIG_BLK_DEV_RAM=y

CONFIG_BLK_DEV_RAM_SIZE=8192

CONFIG_ISO9660_FS=y

CONFIG_JOLIET=y