On a PC with a 20GB partition hda1 running RH9, I mounted fedoar core 1 on hda2, another 20GB partition. After the installation, the PC reboots, but get stuck at the GRUB> prompt. I booted off the linux rescue mode, edited the grub.conf file to replace all references of root=LABEL=/1 by root=/dev/hda2, grub-install /dev/hda, the PC now stuck at GRUB Error 17. I then reverted back to RH 9 on hda1 (linux rescue, chroot hda1 and grub-install to reset the MBR), edited the grub.conf to added the lines title Fedora Core (2.4.22-1.2115.nptlsmp) root (hd0,1) kernel /boot/vmlinuz-2.4.22-1.2115.nptlsmp ro root=/dev/hda2 rhgb initrd /boot/initrd-2.4.22-1.2115.nptlsmp.img title Fedora Core-up (2.4.22-1.2115.nptl) root (hd0,1) kernel /boot/vmlinuz-2.4.22-1.2115.nptl ro root=/dev/hda2 rhgb initrd /boot/initrd-2.4.22-1.2115.nptl.img Now it complains: GRUB Error 18: the selected cylinder exceeds the maximum supported by BIOS On a 2-3 years old PC with ASUS CUV4 motherboard, with latest BIOS 1016 Beta 1. >From the BIOS, I did try to select Primary master -> type: HDD -> LBA: LARGE, but no help. Can we specify get GRUB to access directly the appropriate partition? I thought GRUB is capable to handle this situation back to RH 7.3.