RE: Weird: 30 sec delay during early boot

[David Balazic]

> From: 	Matt Domsch[SMTP:Matt_Domsch@xxxxxxxx]
> 
> On Wed, Jul 28, 2004 at 02:16:19PM +0200, David Balazic wrote:
> > The same delay as before.
> > 
> > I built 2.6.8-rc1 first, then patched and issued a "make bzImage";
> > maybe it did not compile all the new stuff ?
> 
> No, it didn't work for Jeff either, and I've been gone on vacation/OLS
> the past couple weeks, just now getting back into normal work mode.  I
> haven't forgotten about you.
> 
> The crazy thing is, the early real mode code has issued a "Get Disk
> Type" (int13 fn15) command for ages, so I suspect it's not being slow for
> disk 80 or 81, but for one of the higher values.  From setup.S:
> 
> # Check that there IS a hd1 :-)
>         movw    $0x01500, %ax
>         movb    $0x81, %dl
>         int     $0x13
>         jc      no_disk1
>         cmpb    $3, %ah
>         je      is_disk1
> 
> This is all I was trying to accomplish with that test patch.
> 
> David, you had said before that by downgrading your BIOS you no longer
> saw the delay.  Is this not still true?
> 
Still true, downgrading removes the delay.

> You also mentioned that Grub made different calls.  I'll check that
> out too.
> 
Can you make a patch, that only accesses hd0 and hd1 ?
Or one which prints what is it doing, on each step ?
( I tried this one myself, but it did not work :blush: , IA32 assembler
is not my strong side )

> Thanks,
> Matt
> 
> -- 
> Matt Domsch
> Sr. Software Engineer, Lead Engineer
> Dell Linux Solutions linux.dell.com & www.dell.com/linux
> Linux on Dell mailing lists @ http://lists.us.dell.com
> 
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