On Fri, Dec 10, 2010 at 8:20 AM, Sean Dague <[email protected]> wrote:

> If your bootloader is on sda (presumably grub) then it should almost be
> that easy.  The one thing to watch out for is the fact that Ubuntu uses UUID
> to mount in /etc/fstab (to deal with accident drive reordering by the
> firmware).
>
> You'll have to adjust the UUIDs accordingly.  ls /dev/disk/by-uuid will
> give you those values and what devices they point to.
>
>        -Sean
>
>
Actually, regarding the 4 HDD limit, it looks like it just got a little more
complicated.  Turns out the 250GB drive is IDE, while the other three and my
optical drive are SATA.  So even if I wanted to deal with the slower IDE
interface for my OS, I still couldn't swap over the cables.  At this point
it seems like it would be better to leave the 250GB for something else and
just use the 1TB drive for my OS and my files, with the 2TB drive remaining
as backup.

Regardless of how I organize things, the idea remains the same, I want to
move my OS without reinstalling.

I poked around for GRUB, and it looks like it's on both sda and sdb, how do
I tell which one is the active/primary one?  I'm guessing sda, since it says
"boot drive" and sdb doesn't in the following output lines, but that's just
a guess.

$ sudo file -s /dev/sda

/dev/sda: x86 boot sector; GRand Unified Bootloader, stage1 version 0x3,
boot drive 0x80, stage2 address 0x2000, stage2 segment 0x200; partition 1:
ID=0x7, active, starthead 1, startsector 63, 134205057 sectors; partition 2:
ID=0x7, starthead 239, startsector 134205120, 1819314000 sectors, code
offset 0x48

$ sudo file -s /dev/sdb
/dev/sdb: x86 boot sector; GRand Unified Bootloader, stage1 version 0x3,
stage2 address 0x2000, stage2 segment 0x200; partition 1: ID=0x83, active,
starthead 1, startsector 63, 149838192 sectors; partition 2: ID=0x5,
starthead 254, startsector 149838255, 6458130 sectors, code offset 0x48


--
John D. Mort
http://john.mort.net
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