Diego Santa Cruz wrote: > Hello, > > I have installed the FC6 kernel 2.6.18-1.2849.fc6PAE on a machine with 4 > GB of memory (of which the upper 2 GB are mapped by the BIOS above the 4 > GB barrier). > > The kernel is not booting since it does not find the initrd and thus > panics (cannot find init). > > Passing the mem=4096M option to the kernel solves the problem, but > limits the actual memory to 2 GB only. > > The BIOS-provided physical RAM map is: > BIOS-e820: 0000000000000000 - 000000000009ec00 (usable) > BIOS-e820: 000000000009ec00 - 00000000000a0000 (reserved) > BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) > BIOS-e820: 0000000000100000 - 000000007ffa0000 (usable) > BIOS-e820: 000000007ffa0000 - 000000007ffae000 (ACPI data) > BIOS-e820: 000000007ffae000 - 000000007ffe0000 (ACPI NVS) > BIOS-e820: 000000007ffe0000 - 0000000080000000 (reserved) > BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) > BIOS-e820: 0000000100000000 - 0000000180000000 (usable) > > The grub config is: > > title Fedora Core (2.6.18-1.2849.fc6PAE) > root (hd0,0) > kernel /boot/vmlinuz-2.6.18-1.2849.fc6PAE ro root=/dev/md0 rhgb > quiet > initrd /boot/initrd-2.6.18-1.2849.fc6PAE.img > > Grub version is grub-0.97-13. > > I also reported this on bugzilla at > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=218470 > > Any ideas on what could be wrong? > > The MB is an ASUS P5B deluxe, with an Intel 965 chipset. > > Thanks, > > Diego > It sounds like your BIOS is not passing the correct memory map to the kernel. You may need to look at the memmap boot options. This will let you pass the correct memory map to the kernel. You can also try the noapic and/or the nolapic options, and see if they help. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
