Eeri Kask wrote:
bibo,mao wrote:
>> menuentry "MacOSX" {
>> set root=(hd0,2)
>> chainloader /System/Library/CoreServices/boot.efi
>> }
>>
>> menuentry "GNU/Linux" {
>> set root=(hd0,5)
>> linux /boot/vmlinuz root=/dev/sda5
>> }
>>
> There is no initrd option in your menu, I do not know whether it can
> successfully boot up without initrd option with grub2. you can enter
> into rescue mode(command-line mode), and enter commands like this:
> $linux /boot/vmlinuz root=/dev/sda5
> $initrd /boot/xxx
> $boot
>
> And what is your linux kernel version?
2.6.18.5.
There exists one bug in Linux kernel only EFI bios relative at
http://marc.theaimsgroup.com/?l=linux-kernel&m=116157536316034&w=2
I do not know whether 2.6.18.5 incorporates this bug.
initrd is in my case in fact not needed; I compiled ata_piix and ext3
drivers, and everything inbetween directly into the kernel, so if
correctly loaded, it should be able to access /dev/sda5 and retrieve
/sbin/init from the hard disk; then everything else comes from there as
well.
Currently I am a little puzzled, as grub2 loads and executes MacOS-X
boot.efi correctly, but if trying linux, then linux stops somewhere.
As next, if burning the same kernel image as a bootable syslinux-CD,
linux gets loaded and executed as one would expect.
With the "nv" driver even X11 runs in full 1920x1200 resolution on
iMac-T7400 excellently (nvidia proprietary driver builds, starts and
runs without complaints, but shows "black pixels" only :-).
Maybe MacOS if booting from CD sets up some faked BIOS environment so
Linux and X11 are in believing it is usual IBM-PC-hardware, but if
booting with grub2 this is not the case and then linux fails?
I am not familiar with Mac machine, In general there exists two types of
bios. One is EFI bios, the other is legacy pc bios. I doubt that
syslinux-CD boots from legacy pc bios but not EFI bios. You can enter
"dmesg" command to find memory map information to judge which bios kernel
boots from.
thanks
bibo, mao
Momentarily I am not convinced it is a grub2 issue.
Greetings,
Eeri Kask
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