OESF Portables Forum

Model Specific Forums => Sharp Zaurus => Zaurus - pdaXrom => Topic started by: Antikx on October 24, 2007, 01:13:04 pm

Title: Multi-boot Using Uboot
Post by: Antikx on October 24, 2007, 01:13:04 pm

Hello,

I did a bit of searching and didn't find enough info to be confident in trying it.

Can someone tell me the way to dual-boot R198 and pdaXii13/beta3?

I would like to do it for testing purposes, and for the occasional thing that might not run on one or the other.
P.S. I have a C1000, so I would need to run pdaXii13/Beta3 off SD.

Title: Multi-boot Using Uboot
Post by: Chero on October 25, 2007, 03:26:44 pm

Hi,

I don't think it is possible.
uboot can be used to setup a multi-boot system but all have to use the same kernel. since beta3 uses a 2.4 kernel and r198 a 2.6 kernel you could say you have a problem.

To use multiboot :
uboot uses some predefined keys to select a drive or system to boot from, just press the key while booting :
"OK" : to flash a new kernel/image
"1" : boot from /dev/mmcblk0p1 (sd)
"2" : boot from /dev/hda1 (microdrive)
"3" : boot from /dev/hdc1 (cf)
"4" : don't remember
nothing : boot from flash

I'm not really sure about the exact order or functions of 1, 2, 3, 4 - just try and you will see (I'm using "nothing" and "2").

Chero.

Title: Multi-boot Using Uboot
Post by: ZDevil on October 27, 2007, 06:08:43 pm

I didn't really know it's that easy ...

But a barebone interface, even as bony as a question prompt (like "Sweatheart, how do you like it now?") will be good?

Apart from the kernel and other systemwide tweakings, is there also going to be a new uboot?  

(On my Z Debian has eaten up the internal drive, leaving the NAND empty for rent ...)

Title: Multi-boot Using Uboot
Post by: InSearchOf on October 27, 2007, 08:28:29 pm

what do you mean a "new" uboot...

Well one thing I would like to do is give the user the option of where the default rootfs is booted from, from the emergency console... but that is still a work in progress.

Late

Title: Multi-boot Using Uboot
Post by: ZDevil on October 28, 2007, 05:13:19 am

Thanks.
What I mean is to have the choices like in Altboot when booting up, so the user can choose which OS to load by pressing a key.
In the emergency console ... do you meam the user has to fix this early during installation and can he change that afterwards?

Title: Multi-boot Using Uboot
Post by: InSearchOf on October 28, 2007, 11:30:10 am

I mean... adding a configuration to the maintenance menu (text based gui) that say... "default boot rootfs" "NAND" "SD" "Internal HD" "External HD"

But I believe uboot can do what you ask but I think when sashz set up UBoot is suppresses the timeout for the boot menu... not 100% sure of that though.

Late