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SubjectRe: INITRD/RAMDISK/SYSLINUX booting fails with new kernel (vs2.2series)
On Tue, 22 Aug 2000, Michael Peddemors wrote:

> On Tue, 22 Aug 2000, you wrote:
>
> Sigh, been working on this all day today.. decided to track this down once
> and for all...
> Stripped a bunch of printk out so I could see what was flashing by all the
> time and changed the vidmode....(I thought it was just the RAM map <sheepish
> grin>)
> Sure enough.. There is something important there....
> initrd extends beyond end of memory (0x01ff932d > 0x01d80000)

That explains it.

> I put in a printk and get back LOADER_TYPE=49 INITRD_START=3276800
>
> Hmmm.. That looks real wrong... Is it a fault with trying to prink
> LOADER_TYPE as a %d or is it really seeing 49

LOADER_TYPE 49 is the identifier for syslinux.
from ldlinux.asm:
syslinux_id equ 031h ; SYSLINUX (3) version 1.x (1)

At a glance, it looks like INITRD_SIZE is set wrong.

Please verify INITRD_START, and add INITRD_SIZE to your printk.
INITRD_START=3276800 means INITRD_SIZE=30249773.. and that doesn't
jibe with floppy ;-) Here, syslinux always loads (16k aligned)
the initrd at top of memory and gets INITRD_SIZE right.

> Strange why this (2.4 vs 2.2) kernel works different tho.. Something MUST
> have changed.

Try mem=31M for grins (hunch-o-meter says memory detection changes)

-Mike
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