Re: PATCH: Linux high in the sky

Ulrich Windl (Ulrich.Windl@rz.uni-regensburg.de)
Mon, 26 Feb 1996 14:08:33 +0100


On 22 Feb 96 at 3:20, Hans Lermen wrote:

> The problem is: There is no space left in the bootsector.
> In fact you have only 5 bytes, from which 2 atleast are already planned
> to be used in the future for some additional flags (was proposed here on the
> list some time ago, don't remember for what it will be used)
>
> 32-bit magic + jump around + version == 7 bytes ! You see ?
>
> But 'file' may have a look at the new header in setup.S
> which also has its fixed place:
>
> (0x200 jump around)
> 0x202 .ascii "HdrS" ! Magic
> 0x206 .word 0x0200 | Version number of header format > 0x200
> ...
> 0x211 .byte 0 | 0 == zImage, 1 == bzImage
>
> Hans
> <lermen@elserv.ffm.fgan.de>

Why aren't you using the "jump address" as magic number? You would
put a new magic cookie at 0x206, and then you can expand the data
area a little bit.

Ulrich