Re: [grub] Experiencing difficulties to access USB key files

[Arbiel (gmx)]

Le 25/01/2016 18:55, Andrei Borzenkov a écrit :
> 25.01.2016 00:09, Arbiel (gmx) пишет:
>> Hi
>>
>> So, I understand nativedisk or installing grub with --disk-module=native
>> will bypass BIOS and have grub access the hardware using its own
>> drivers, which I won't have to insert with insmod commands.
>>
>> It failed as shown at the end of the message
>>
>> Le 23/01/2016 13:08, Andrei Borzenkov a écrit :
>>> 23.01.2016 14:39, Arbiel (gmx) пишет:
>>>>> But GRUB does not have driver to access this hard disk anymore. Current
>>>>> GRUB disables BIOS access as soon as these modules are loaded. If you
>>>>> want to test them, please always use "nativedisk" GRUB command which
>>>>> attempts to replace device name in $prefix and $root with new one,
>>>>> discovered by native drivers.
>>>>>
>>>>> Old GRUB may not have this command though.
>>>> Do you mean that "hd0,msdos1" and so on, are sort of symbols for
>>>> information understood by the BIOS that grub own drivers do not understand 
>>>> ?
>>> hd0 refers to disk accessible via BIOS. USB mass storage accessible
>>> directly using USB drivers would be name usb0 (or whatever running
>>> number). Command "nativedisk" attempts to find and replace new device
>>> names in $root and $prefix.
>>>
>>>> In short statement, I cannot have grub using its own drivers without
>>>> writing a whole new application and I have to drop the idea of accessing
>>>> any file on a USB drive if the BIOS itself does not encompass USB drivers.
>>> Not sure I understand what you mean. You can replace drivers online
>>> using "nativedisk" command or you can even install GRUB using
>>> grub-install --disk-module=native.
>> My PC is a BIOS plateforme.
>>
>> env LANG=all sudo grub-install -V
>> grub-install (GRUB) 2.02~beta2-9ubuntu1.4
>>
>> I got a program error :
>>
>> env LANG=all sudo grub-install --boot-directory=/mnt/boot
>> --disk-module=native /dev/sdd
>> grub-install: --disk-module: (PROGRAM ERROR) Option should have been
>> recognized!?
>> Try 'grub-install --help' or 'grub-install --usage' for more information.
>
> commit fa33530870839e303354ff2660baeff5356ea736
> Author: Glenn Washburn <address@hidden>
> Date:   Sun Jun 22 01:45:11 2014 +0200
>
>         * util/grub-install.c: Fix handling of --disk-module.
As I was not sure to undertand what you mean, I transfered the message
to Glenn and copied you.
>
>
>
>
>
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