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Re: PC BIOS & EDD problem

From: Andrey Borzenkov
Subject: Re: PC BIOS & EDD problem
Date: Sun, 4 May 2014 08:46:38 +0400

В Sun, 4 May 2014 01:50:33 +0200
Alexey Orishko <address@hidden> пишет:

> Hi all,
> Some time ago BIOS Enhanced Disk Drive specification got a new
> revision where device path was changed from 8 to 16 bytes.
> I see that the latest grub code in git has support for the latest 
> specification:
> include/grub/i386/pc/biosdisk.h:
> ...
> grub_uint8_t device_path[16];
> Are old BIOS versions supported somehow or simply abandoned?

The only information from INT13 0x48 used by grub is device size. Do
you observe real problem or is it theoretical question?

> Do I need to revert commit b828fb5d9c7575700a64751efbddd738e2b7c239 of
> Vladimir Serbinenko to get old BIOS working?
> Is there any difference between 32 and 64 bit version of grub in handling 

There is no 64 bit grub for BIOS platform.

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