grub-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH] Ensure boot CD can be accessed


From: Bean
Subject: Re: [PATCH] Ensure boot CD can be accessed
Date: Sun, 10 Feb 2008 20:37:36 +0800

On Feb 10, 2008 8:23 PM, Christian Franke <address@hidden> wrote:
> Detecting BIOS CD device by INT13 "Check Extensions" (AH=42) call does
> not work for all BIOSes.
>
> This patch fixes this to allow access to the boot CD.
>
> See also thread "[PATCH] Create floppy emulation boot CD with
> grub-mkimage". The "(cd0" patch from Bean is not included here but
> should also be applied.
>
> Christian
>
> 2008-02-10  Christian Franke  <address@hidden>
>
>         * disk/i386/pc/biosdisk.c: Include <grub/machine/kernel.h>.
>         (GRUB_MOD_INIT): Make boot CD accessible even if BIOS does not report
>         INT13 Extensions for grub_boot_drive.
>         * include/grub/i386/pc/biosdisk.h (GRUB_BIOSDISK_MACHINE_CDROM_START):
>         Change from 0xe0 to 0x9f to cover more BIOS variants.
>         * include/grub/i386/pc/kernel.h (grub_boot_drive): Add EXPORT_VAR.

i think we can assume grub_boot_drive as (cd0) if it's within range,
and start scanning from grub_boot_drive + 1.

-- 
Bean




reply via email to

[Prev in Thread] Current Thread [Next in Thread]