Booting manually with GRUB tab completion

grub> root (hd0,0)
Filesystem type is ext2fs, partition type 0x83

grub> kernel /
Possible files are: lost+found grub initrd-2.6.18-8.el5.img System.map-2.6.18-
8.el5 config-2.6.18-8.el5 symvers-2.6.18-8.el5.gz vmlinuz-2.6.18-8.el5

grub> kernel /vmlinuz-2.6.18-8.el5 ro root=LABEL=/
[Linux-bzImage, setup=0x1e00, size=0x1ad054]

grub> initrd /
Possible files are: lost+found grub initrd-2.6.18-8.el5.img System.map-2.6.18-
8.el5 config-2.6.18-8.el5 symvers-2.6.18-8.el5.gz vmlinuz-2.6.18-8.el5

grub> initrd /initrd-2.6.18-8.el5.img
[Linux-initrd @ 0xfe8a000, 0x15547c bytes]

grub> boot