Syslinux - Aug 2008 - failed when boot the kernel image on the harddisk from syslinux on a floppy

Thanks for responses.

I use GRUB as my bootloader in my hard disk now. I have a Windows in
sda1, Ubuntu in sda3.
If I want to install extlinux to boot Ubuntu, should I follow the steps
below?
1. in Ubuntu, go to extlinux folder, run command
    ./extlinux --install /boot
2. create an extlinux.conf in/boot 
3. cd ../mbr
4. cat mbr.bin > /dev/sda (or use dd if=mbr.bin of=/dev/sda bs=404
count=1)
5. restart PC.

The extlinux.txt says I need make the syslinux partition active. I know
Windows partition needs activation. Is it necessary to turn an ext2/ext3
partition to active, too? If it is, how?

Best regards,
Hu Jia Yi
Ext: 20430
Tel: 65-67510430
 

-----Original Message-----
 ------------------------------

Message: 5
Date: Thu, 21 Aug 2008 13:03:00 +0300
From: "Sergii Kolisnyk" <kolkmail at gmail.com>
Subject: Re: [syslinux] failed when boot the kernel image on the hard
	disk	from syslinux on a floppy
To: "For discussion of SYSLINUX and tftp-hpa" <syslinux at
zytor.com>
Message-ID:
	<1783038b0808210303j3c69e310pb6892b5f681b5190 at mail.gmail.com>
Content-Type: text/plain; charset=UTF-8

Hi,

SYSLINUX isn't designed to work that way.
It can boot kernel only from same filesystem from which it's loaded.
You need GRUB or GRUB4DOS for your task.
SYSLINUX can be used to chainload GRUB.

Best regards,
Sergii Kolisnyk

2008/8/21 Hu Jia Yi <jyhu at asmpt.com>:
> After formatting a floppy to MSDOS format and using  syslinux
/dev/fd0,
> I successfully installed ldlinux.sys to the root directory of the
> floppy.
>
> Then I created a syslinux.cfg  under the root directtory of this
floppy
> to load the linux kernel in my first hard disk, 3rd partition, boot
> folder. The file system
>
> of this partition is ext3. The floppy has a FAT file system. This
config
> file is listed below.
>
>
>
> When I restarted PC and booted from this floppy , it failed with a
> message
>
> "Could not find kernel image: /boot/vmlinuz-2.6.22-14-generic"
>
>
>
> Did I make a wrong configuration? I am sure the names of linux kernel
> and initrd are correct.
>
>
>
> PROMPT 0
>
> TIMEOUT 30
>
> DEFAULT linux
>
> LABEL linux
>
> SAY Now booting the kernel from SYSLINUX...
>
> KERNEL /boot/vmlinuz-2.6.22-14-generic
>
> APPEND root=/dev/sda3 initrd=/boot/initrd.img-2.6.22-14-generic
>
>
>
>
>
> Best regards,
>
> Hu Jia Yi
>
> Ext: 20430
>
> Tel: 65-67510430
>
>
>
> _______________________________________________
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>

------------------------------

Message: 7
Date: Thu, 21 Aug 2008 09:28:32 -0700
From: "H. Peter Anvin" <hpa at zytor.com>
Subject: Re: [syslinux] failed when boot the kernel image on the hard
	disk from syslinux on a floppy
To: For discussion of SYSLINUX and tftp-hpa <syslinux at zytor.com>
Message-ID: <48AD97B0.9020609 at zytor.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Sergii Kolisnyk wrote:
> Hi,
> 
> SYSLINUX isn't designed to work that way.
> It can boot kernel only from same filesystem from which it's loaded.
> You need GRUB or GRUB4DOS for your task.
> SYSLINUX can be used to chainload GRUB.
> 
Or just put the kernel and initrd on the syslinux partition and mount it

as /boot.

Now, if you do that, you don't want to put the /boot prefix in the 
syslinux configuration file, since syslinux will see the root *of the 
filesystem* as /.

	-hpa



------------------------------

Message: 8
Date: Thu, 21 Aug 2008 09:29:11 -0700
From: "H. Peter Anvin" <hpa at zytor.com>
Subject: Re: [syslinux] failed when boot the kernel image on the hard
	disk from	syslinux on a floppy
To: For discussion of SYSLINUX and tftp-hpa <syslinux at zytor.com>
Message-ID: <48AD97D7.5030206 at zytor.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hu Jia Yi wrote:
> After formatting a floppy to MSDOS format and using  syslinux
/dev/fd0,
> I successfully installed ldlinux.sys to the root directory of the
> floppy.
> 
> Then I created a syslinux.cfg  under the root directtory of this
floppy
> to load the linux kernel in my first hard disk, 3rd partition, boot
> folder. The file system
> 
> of this partition is ext3. The floppy has a FAT file system. This
config
> file is listed below.
> 
Oh yes, it might be that the easiest option for you is to use extlinux, 
and drop the FAT partition, too.

	-hpa

Hu Jia Yi wrote:
> Thanks for responses.
> 
> I use GRUB as my bootloader in my hard disk now. I have a Windows in
> sda1, Ubuntu in sda3.
> If I want to install extlinux to boot Ubuntu, should I follow the steps
> below?
They sound right to me.
> 1. in Ubuntu, go to extlinux folder, run command
>     ./extlinux --install /boot
> 2. create an extlinux.conf in/boot 
> 3. cd ../mbr
> 4. cat mbr.bin > /dev/sda (or use dd if=mbr.bin of=/dev/sda bs=404
> count=1)
> 5. restart PC.
> 
> The extlinux.txt says I need make the syslinux partition active. I know
> Windows partition needs activation. Is it necessary to turn an ext2/ext3
> partition to active, too? If it is, how?
Yes it is.  You can use fdisk, sfdisk or parted to do that.

	-hpa