Boot from second hard drive with ZFS in Solaris 10 x86

Question

Hi,
The usual menu.lst to boot Solaris10 x86 with a boot environment that contains a ZFS boot loader is this one
title Solaris 10 5/08 s10x_nbu6wos_nightly X86
findroot (pool_rpool,0,a)
kernel$  /platform/i86pc/multiboot  -B $ZFS-BOOTFS
module /platform/i86pc/boot_archive
title Solaris failsafe
findroot (pool_rpool,0,a)
kernel /boot/multiboot kernel/unix -s    -B console=ttyb
module /boot/x86.miniroot-safeI understand that to add an alternate boot disk, I have to play with installgrub and then attach it in the pool.
But my question is : Is there a way to boot from my alternate hard disk by adding a new entry in menu.lst or is the only
way is to modify the BIOS parameter?
Thanks for your help,
Groucho_fr

Answer 1

Groucho_fr wrote:
Thanks for your answer Alan,
But ok, I imagineI can add a grub entry. But what I want to know is what is the exact way to boot from an alternate hard disk on Solaris 10u6
x86.AFAIK there are only two ways to do this. Select the disks via BIOS which becomes a royal PITA in a short amount of time or play with a boot manager such as GRUB until you get the syntax right.
Personally I put all OS's on the primary disks if possible to avoid these situations and if I have others to play with then you can easily mount them in or set them up as D: drive etc...
The only exception would be in an enterprise setting where you need to do things such as mirroring but then again in those situations it's only one OS per machine anyways so it's much easier.
So at the end, I am not sure what I have to configure and what is the procedure to boot from my alternate boot diskTry the grub homepage for the grub manual and hopefully for a mailing list or try a search engine.
http://docs.sun.com/app/docs/doc/819-5461/zfsboot-1?a=view
has an example to follow of using -B.
And moreover, the installgrub does not working for me :
root@mac1 # zpool status
pool: rpool
state: ONLINE
scrub: resilver completed after 0h2m with 0 errors on Thu Mar 26 10:56:24 2009
config:
NAME          STATE     READ WRITE CKSUM
rpool         ONLINE       0     0     0
mirror      ONLINE       0     0     0
c5t0d0s0  ONLINE       0     0     0
c5t4d0s0  ONLINE       0     0     0
errors: No known data errors
root@mac1 # installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c5t4d0s0
cannot open/stat device /dev/rdsk/c5t4d0s2
You shouldn't need to do an installgrub if you installed Solaris. Try c5t4d0s0 not s2.
alan