From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <8af692a6aa5a1270aab459dd5945364d@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] non-BIOS boot
From: David Gordon Hogan <dhog@plan9.bell-labs.com>
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Date: Thu, 30 May 2002 14:17:19 -0400
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> If you dont use the BIOS wouldn't you have to access
> the disk via i/o ports? If so, you would have to adhere to
> the SCSI/ATA standard rather than a more conformed interface
> via int13? If you did have to adhere to the different standards
> wouldnt that mean implementing the drivers in the MBR/PBS?
> I think _I'm_ the one missing something :) Can you fill me

Good luck fitting that code into the 512 bytes you have to play
with in the MBR.

The BIOS int13 call gives you enough to get the OS into memory,
then you can run a _real_ driver, tailored to the OS, and not to
the pre-Cambrian qualities of the BIOS.