El mié, 28-01-2009 a las 17:42 +0100, step21 escribió: > Hey, while investigating possibilities on how it might be possible to > install/run something "wubi" like on macs (without having windows > installed) I ran into a couple of issues. I post here mainly in hope > that one of the folks that actually wrote the code for this or at > least have experience with it read this, cause most ppl on irc (while > being very helpful) seem to know more about the pure x86/bios/linux > side of things. > > Besides some (minor?) issues like that the command line > freezes/becomes unresponsive after a (relatively short) amount of time > and the fact that booting back to OS X (which everyone says should > work 100%) does not work at all (it complains that it can't find the > specified os x *efi, but it is there, and search correctly finds the > right drive) my biggest problem right now is the following: > > I got some kerne/initrd combo to boot (2.6.26 from debian lenny > netinstall iirc) but it gets to the language selection screen, first > thing you notice, the keyboard is dead. I supplied "init=/bin/sh" to > be able to read at least the last of the error messages. As it turns > out to me it seems that seemingly everything pci-related is > unavailable. Error messages are as follows: > > [time after boot]PCI No IRQ known for interrup pin C of device > 0000:00:1a.7. Please Try using pci=biosirq > [time after boot]ehci_hcd 0000:00:1a.7 Found HC with no IRQ. Check > BIOS/PCI 0000:00:1a.7 setup! > [time after boot]ehci_hcd 0000:00:1a.7 fail, -19 > (of course time/device ids and pins (A-D) changed, but otherwise they > were the same I think) > I tried supplying pci=biosirq although I didn't think it would work, > and it didn't, or some solution for a similiar issue from the debian > wiki for the macbook (using a usb keyboard) which didn't work either. > The usb keyboard works for refit and grub, but not once booted into > linux. On some other wiki page it was suggested to supply "noapic > acpi=force" and maybe "irqpoll" which I tried in various combinations > without a change. > > The machine I use for testing this is a first generation macbook air. > Now while there are numerous reports about people running linux on it > (pretty well actually) by providing it with a legacy bios environment, > I didn't find a report about one running grub-efi on it successfully > to boot linux. The most relevant posts my searches come up with are my > own posts on the ubunutu forums. > > So, I'm not sure who is to blame here, or if it's maybe just my own > fault, but I decided that it would be nice to get the > opinion/solutions? of some ppl who might be more intimately familiar > with the workings of the mac boot firmware etc. and maybe know if this > actually has been tested and should work, or not. > > Thanks for an help in advance.
Are you sure that Debian lenny supports booting from EFI? I'm quite literally talking out of my ass here, so I don't have a clue, but it seems that the kernel you're trying to boot is trying to use BIOS functionality. GRUB does _not_ include BIOS emulation, so that will certainly not work. In order for a Linux kernel to boot from EFI, you have to enable the switch in the pre-build kernel configuration. From my past knowledge (on my brother's Macbook), at least Ubuntu/x86 kernels _do_ have the EFI switch enabled, so you might give it a try and check if that's what's going wrong. On the OS X and keyboard issues, I'm afraid I cannot help you. Perhaps our elders would be wiser? PS: you could try, however, to enable debug output when compiling your GRUB so that you could see if there was anything wrong when loading the file, like a hypothetical hfs.mod error (again, talking out of my non-talking orifices)
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