This is because in the 2.6 kernel we started putting a VFAT partition with
Eclipse for our Windows only customers. It was easier to put it at the
beginning of the disk and push everything back. We simply kept this across the
board even when there was no Eclipse. The bootloader does indeed simply look
for partition types as opposed to static partition numbers, this leaves a but
of flexibility in the system.
You should check out our whitepaper of preventing filesystem corruption:
http://www.embeddedarm.com/about/resource.php?item=459
As well as a step by step for the TS-7370:
http://www.embeddedarm.com/about/resource.php?item=466
We also have a failsafe example for the TS-7800:
ftp://ftp.embeddedarm.com/ts-arm-sbc/ts-7800-linux/binaries/ts-images/failsafe-boot/README
Both of those examples are explained in the whitepaper.
-Kris Bahnsen
Technologic Systems
--- In "Russell N. Nelson - rnnelson" <>
wrote:
>
> I know that the issue of partitions has come up before. Why in 2.4 is the
> kernel in 1, initrd in 2, and root in 3, whereas in 2.6, the kernel is in 2,
> initrd in 3, and root in 4?
> Just for grins, I tried putting the 2.6 data in the 2.4 partition
> arrangement, and it boots just fine. The trick is that the kernel and initrd
> have to be marked with partition types 0xda. The bootloader seems to look for
> them specially.
>
> I've been having problems with jfs losing system files, which I blame on
> jfs_fsck. So I'm going to build a system with a read-only root partition that
> puts everything changeable in ramdisk. That way, I don't have to run a file
> system checker, and my system will always always boot. Has anybody else tried
> this? Any advice for me?
>
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