make grub boot rom a sd slot

theacerguy · 08-21-2009, 06:54 AM

hi all,
my aspire one has 2 sd slots but the bios doesnt support booting from either so i want to add a option in grub according to mount it is mounted as /dev/dsk/c9t0d0p0:1 so disk-by-id
i use opensolaris 2009.06 as my sole os with puppy on the sd
is there any way i can use grub to boot from the sd?

firewiz87 · 08-23-2009, 10:46 PM

I am assuming u have grub already installed.... maybe you can map the device (the sd slot)in grub. try editing the devices.map or use the command device (grub-legacy) or loopback (grub2) from the grub prompt.

theacerguy · 08-24-2009, 04:40 AM

Quote:

Originally Posted by firewiz87

I am assuming u have grub already installed.... maybe you can map the device (the sd slot)in grub. try editing the devices.map or use the command device (grub-legacy) or loopback (grub2) from the grub prompt.

i will try but can i just chainload to the grub on the device?

firewiz87 · 08-24-2009, 08:51 AM

Quote:

Originally Posted by theacerguy

i will try but can i just chainload to the grub on the device?

Yes you can also do that.... but you wont need it since modifying the existing grub is easier rather than installing a new one in every sd you wanna use.....

aus9 · 08-24-2009, 10:30 AM

quote..and dont install grub over slacks lilo it aint prettey

maybe you have tried lilo? heh heh

2) lets go back...have you checked the mbr of the sd is bootable?

I do not use Solaris but the dd command should work?

I am not sure how it sees the sd but lets call it sdc?

Code:

 
su
dd if=/dev/sdc bs=512 count=1 of=mbr && strings mbr
1+0 records in
1+0 records out
512 bytes (512 B) copied, 5.0322e-05 s, 10.2 MB/s
GRUB
ZRrK
D|f1
GRUB 
Geom
Hard Disk
Read
 Error

result for grub-legacy and

grub2 output
GRUB
ZRr=
H|f
D|f1
GRUB
Geom
Hard Disk
Read
Error

theacerguy · 08-25-2009, 01:49 PM

ok i am now using the grub of suse 11.2 m4 and chainloading solaris no my bios does not support booting from sd so that is why i posted this thread and there is only 1 device always in apart from when i update it on my win pc (or crunchbang if i can use unetbootin

) oh and cos itrs unetbootin it is isolinux i fink

and on all my distros it is a diskid according t fdisk -l tho i might not be able to get back with ,uch info cos my laptop charger is oxidizing so it barely works