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Re: [PATCH] Workaround for usb boot failure on some mainboards
From: |
Thomas Frauendorfer |
Subject: |
Re: [PATCH] Workaround for usb boot failure on some mainboards |
Date: |
Wed, 22 Sep 2010 18:52:46 +0200 |
On Wed, Sep 22, 2010 at 6:14 PM, Lennart Sorensen
<address@hidden> wrote:
> Wouldn't that be a bug in the BIOS? Don't go writing to a drive you
> don't know what contains. It could be something other tahn fat16 after
> all (what if it was a linux kernel with a bootheader on it and not a
> filesystem at all?)
>
> Sounds like the BIOS needs fixing badly. Nothing wrong with making
> grub more robust against corrupt filesystems, but it doesn't actually
> fix the bug in the BIOS.
Well, I think I didn't state the problem clearly enough:
The bios doesn't write to the disk, it just changes the value on the
fly when the bootloader is reading the bpb through a bios method.
The workaroud also doesn't change the disk, it only reads the
necessary information from a region the bios doesn't mess up on the
fly...