On 08.06.2012 19:57, John Frankish wrote:

>>>> -----Original Message-----
>>>> From: grub-devel-bounces+j-frankish=slb.com@gnu.org
>>>> [mailto:grub-devel-
>>>> bounces+j-frankish=slb.com@gnu.org] On Behalf Of Vladimir 'f-
>>>> coder/phcoder' Serbinenko
>>>> Sent: Friday, 08 June, 2012 19:29
>>>> To: grub-devel@gnu.org
>>>> Subject: Re: FW: grub-efi with latest mac mini
>>>>
>>>>
>>>>> As per above, usb_keyboard was linked via grub-mkimage - the
>>>>> keyboard/mouse do not work with/without any usb modules
>>>>> --------------------------------------
>>>>> I compiled grub from bzr a couple of days back.
>>>>>
>>>>> I didn't use grub-install as I'm nervous about writing to the mbr
>>>>> and not
>>>> being able to boot the mac mini at all.
>>>>
>>>> If you don't supply any direct argument and explicitly add
>>>> --target=x86_64-efi then you can be sure it won't overwrite any MBR
>>>
>>> I tried "grub-install --target= x86_64-efi", but got an error that
>>> grub couldn't write to /boot/grub
>>>
>>
>> First: no space after --target. Second: are you at latest bzr? Third: if you
>> paraphrase errors, I can't give you any good answer.
> 
> Sorry, there was no space and I used bzr from a couple of days ago, I get:
> 
> Path /boot/grub is not readable by grub on boot. Installation is impossible. Aborting
> 
> I also get this if I use --boot-directory=/efi/boot
> 

What does grub-probe -t fs /boot/grub say
Do you run everything as root?

>>>>>
>>>>> Anyway, I can still boot using both hfs+ partition
>>>>> /efi/grub/grub.efi and fat
>>>> partition /EFI/BOOT/ BOOTX64.EFI, but the result is the same - no usb
>>>> keyboard and no usb mouse.
>>>>>
>>>>
>>>> Aa I said before: lack of USB keyboard/mouse in Linux can't be of any
>>>> GRUB wrongdoing since Linux uses its own USB driver.
>>>>
>>>>> Note that I also do not get graphics, but it boots "blind" without
>> problems.
>>>>>
>>>>
>>>> Does videotest work?
>>>>
>>> I get command not found?
>>
> The insmod command must have been wrong, I get:
> 
> No suitable video modes found

If you need insmod for commands your install is broken.
You need insmod efi_gop in any case though.

-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko