Re: USB bulk transfert from GRUB ?

[Vladimir 'φ-coder/phcoder' Serbinenko]

On 12/26/2010 12:46 PM, Nicolas de Pesloüan wrote:
> Le 26/12/2010 11:47, Vladimir 'φ-coder/phcoder' Serbinenko a écrit :
>
>>> If I don't want the device to be switched, I need to remove the udev
>>> rule for the device.
>
>> That's what I wanted to know. So you modify udev rules to control the
>> behaviour of switching. Not
>> really applicable to GRUB. Perhaps one would use a reduced database
>> with only the devices one
>> wants to switch?
>
> This is the reason why I suggested to give the vendor/device id,
> end-point number and string as arguments. Because only few users will
> have several different switchable devices and probably fewer will have
> several they plan to boot from.
>
> I think we can reasonably discover the particular switchable and
> bootable device a grub-mkconfig time and put the single (vendor-id,
> device-id, end-point-number, switch-string) in grub.cfg :
>
> usb_bulk_write --vendor 0x0af0 --device 0x7501 --endpoint 0 \
>     --string
> 0x55534243785634120100000080000601000000000000000000000000000000
>
> (example from /etc/usb_modeswitch.d/0af0:7501)
>
How exactly do we do it on mkconfig time? What prevents doing it on runtime?
>>> The only point is that I need to "burn" an new ISO if I want to
>>> upgrade GRUB or change de
>>> grub.cfg file.
>>>
>> you can even have grub.cfg on microSD using configfile directive.
>
> You mean, by using configfile by hand from the grub prompt? Or by
> having a small grub.cfg in the ISO, that only switch the device, then
> use configfile to load grub.cfg from the micro-SD?
>
The second
>     Nicolas.
>


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

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