Re: USB bulk transfert from GRUB ?

["Nicolas de Pesloüan" <nicolas.2p.debian@gmail.com>]

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)

>> 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?

	Nicolas.