Syslinux - Mar 2003 - Disk images and syslinux

Hi,
 
I'm working on a Red Hat 7.3 based bootable cd. I have included a number of
firmware update floppy images to it succesfully. However, I run into problems
trying to build a floppy image for IBM ServerRAID firmware update. The firmware
update disk set contains three disks. So their content does not fit into 1.44
nor 2.88 floppy images.
 
To my understanding it possible to build a hard disk image let's say 5 MB
and use it with syslinux. However, I'm not sure about the details of how to
do this. All help is highly appreciated.
 
I'm using the latest version of syslinux, which by the way is an excellent
piece of software. Many thanks to Peter for it.
 
++karri

Hi,

"Karri Puumanen" <karri.puumanen at mainframe.fi> schrieb am
16.03.03 12:50:23:
> I'm working on a Red Hat 7.3 based bootable cd. I have included a
number of firmware update floppy images to it succesfully. However, I run into
problems trying to build a floppy image for IBM ServerRAID firmware update. The
firmware update disk set contains three disks. So their content does not fit
into 1.44 nor 2.88 floppy images.
>  
> To my understanding it possible to build a hard disk image let's say 5
MB and use it with syslinux. However, I'm not sure about the details of how
to do this. All help is highly appreciated.
You can 
a) create hard disk images for syslinux. These should look like a complete hard
disk (dd if=/dev/hda),
so it should contain a MBR, Partition table, and the partition contents. You can
use this with the memdisk driver, but this is thought for DOS images. You need
to use loadlin in this environment to
get a linux kernel booted.
b) Use isolinux - so your kernel and initrd are not in a disk image with 1.44 or
2.88 MB, but directly
reside on the CD, without much limitations (you won't want 600 M initrd
files, won't you?).

Regards,

Josef

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Hi,
 
Thanks for your response.
 
I have succesfully used bootable 1.44 and 2.88 images with syslinux/memdisk. No
problemo there. The challenge is how to create a bootable 5-15 MB disk image
with correct geometry, MBR, boot sector, active bit  etc.
 
Having instructions/tools to do such image would make possible for example
intgrating all IBM ServeRAID firmware update disks (3 in total) into one image.
 
++karri
 
-----Original Message----- 
From: Josef Siemes [mailto:jsiemes at web.de] 
Sent: Wed 3/19/2003 3:34 PM 
To: Karri Puumanen; syslinux at zytor.com 
Cc: 
Subject: Re: [syslinux] Disk images and syslinux



	Hi,
	
	"Karri Puumanen" <karri.puumanen at mainframe.fi> schrieb am
16.03.03 12:50:23:
	> I'm working on a Red Hat 7.3 based bootable cd. I have included a
number of firmware update floppy images to it succesfully. However, I run into
problems trying to build a floppy image for IBM ServerRAID firmware update. The
firmware update disk set contains three disks. So their content does not fit
into 1.44 nor 2.88 floppy images.
	> 
	> To my understanding it possible to build a hard disk image let's say 5
MB and use it with syslinux. However, I'm not sure about the details of how
to do this. All help is highly appreciated.
	
	You can
	a) create hard disk images for syslinux. These should look like a complete hard
disk (dd if=/dev/hda),
	so it should contain a MBR, Partition table, and the partition contents. You
can use this with the memdisk driver, but this is thought for DOS images. You
need to use loadlin in this environment to
	get a linux kernel booted.
	b) Use isolinux - so your kernel and initrd are not in a disk image with 1.44
or 2.88 MB, but directly
	reside on the CD, without much limitations (you won't want 600 M initrd
files, won't you?).
	
	Regards,
	
	Josef
	
	______________________________________________________________________________
	E-Mails verschicken und auf Antwort warten? Mit der Kurier-SMS kann
	das nicht mehr passieren - http://freemail.web.de/features/?mc=021174

Hi,

"Karri Puumanen" <karri.puumanen at mainframe.fi> schrieb am
21.03.03 09:01:45:
> I have succesfully used bootable 1.44 and 2.88 images with
syslinux/memdisk. No problemo there. The challenge is how to create a bootable
5-15 MB disk image with correct geometry, MBR, boot sector, active bit  etc.
I can't help much with that. Someone suggested to use dosemu for this, with
fdisk on a
loopback mounted file - but I didn't try that.
> Having instructions/tools to do such image would make possible for example
intgrating all IBM ServeRAID firmware update disks (3 in total) into one image.
BTW: The IBM ServeRAID CD is a bootable linux image, perhaps you can get some
info from this.
Especially the filesystem should be some initrd or similar, not 3 diskette
images. And AFAIR
this contains the firmware upgrade.

Regards,

Josef



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