Ubuntu Upgrade from 11.10. to 12.04

[Peter Hillier-Brook]

On 03/05/12 18:42, Chris Green wrote:
> On Thu, May 03, 2012 at 06:29:55PM +0100, Peter Hillier-Brook wrote:
>>> That's even stranger. How could it have modified BIOS? And more
>>> importantly, WHAT did it modify?
>>
>> How it did it is simple enough, probably via assembler and a BIOS
>> call, and what it did was change the boot order of my SATA disks. To
>> be precise, it moved the disk with Ubuntu aboard (/dev/sdb) to the
>> top of the pile. I normally boot via /dev/sdc which contains my
>> work-a-day Kubuntu system and I get to Ubuntu (and Windows 7 on
>> /dev/sda) when necessary via grub.
>>
> The boot order can surely be altered by lots of things other than the
> BIOS can't it?


The boot order, as stored in the BIOS, was altered *during* the 
distribution upgrade. Cause and effect seem fairly simple to deduce. ;-)

Peter HB