The message “No operating system” comes from the generic MBR, not from grub2.
bor@opensuse:~> sudo strings /boot/backup_mbr
Error
No active partition
Disk read error
No operating system
Invalid CHS read
What am I doing wrong here?
Probably nothing except you take for granted that your BIOS executes code from disk where you installed Linux. Apparently it does not. Either you boot from another disk where generic MBR is installed but no boot block in active partition or some sort of “boot protection” is active and your BIOS does not even executes MBR from disk and executes different code.
On 2013-01-26 02:16, goltoof wrote:
>
> arvidjaar;2521976 Wrote:
>> And what happens when you select in BIOS disk corresponding to /devsdd?
>
> As stated in the first post I get the message “Operating system not
> found.”
>
> BTW, there’s no indicator that I’m booting from /sdb or /sdd. In the
> bios it only calls out the hard drive by name, but those are the
> corresponding drives I installed on and am trying to boot from.
I would have a look at the strings contained on the mbr boot sector of
each disk and find which one has the string “Operating system not
found”, which I think is not a grub message. If it is not in any MBR,
then I would seek on the boot sectors of every partition (it is just 512
bytes, so it is easy with dd and strings).
If none contains it, then the message comes from the bios.
–
Cheers / Saludos,
Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)
Hi, I had this same problem when installing openSUSE 12.3. It works now, not sure why, but this is what I did. I installed SUSE 10.1 with “use entire disk” partition option, which worked fine. Then I “Upgrade” installation using 12.3 usb, not new installation, which subsequently booted at least but had other problems. Then I did new installation of 12.3 with the partitioning that it suggested automatically, which deleted one partition and I think made two others. Now it works great! My amateur shot in the dark is that it has something to do with the partitioning? So I hope maybe this might help someone else with the same problem.
Very Happy of your success. I am sure I would not suggest to install openSUSE 10.1, upgrade to 12.3 and then do a full install of openSUSE 12.3, but if data loss was not a concern then your plan was a success.
On 2013-10-04 09:56, phae1017 wrote:
>
> Hi, I had this same problem when installing openSUSE 12.3. It works now,
> not sure why, but this is what I did. I installed SUSE 10.1 with “use
> entire disk” partition option, which worked fine. Then I “Upgrade”
> installation using 12.3 usb, not new installation, which subsequently
> booted at least but had other problems.
Installing 10.1 and then upgrading from DVD or USB to 12.3 is next to
imposible, unless you know what you are doing. I know what I do, and I
would not attempt it (unless to prove a point).
> Then I did new installation of
> 12.3 with the partitioning that it suggested automatically, which
> deleted one partition and I think made two others.
It is possible that you got two installs, old and new. You could have
told it to reuse the previous partitioning.
> Now it works great!
> My amateur shot in the dark is that it has something to do with the
> partitioning? So I hope maybe this might help someone else with the same
> problem.
Dunno.
–
Cheers / Saludos,
Carlos E. R.
(from 11.4, with Evergreen, x86_64 “Celadon” (Minas Tirith))