I know this topic comes up regularly, in fact I found a previous post and followed the instructions given in that post but it didn't solve my problem.
http://www.pclinuxos.com/forum/index.php/topic,103434.0.html
I have My Linux setup on my desktop as follows:
sda (sata1) - install + home
hda - data only no boot from this disk
this has worked great for a long long time
I have now added another hard drive which although is pata I have attached a convertor to make it sata (connected to sata2). This was due to the lack of connection points on my motherboard (1 pata connection but 2 sata connections). I amended grub to include the fix from the above post
title Windows
rootnoverify (hd1,0)
map (hd1) (hd0)
map (hd0) (hd1)
makeactive
chainloader +1
and grub displays the Windows disk. I added the extra lines at the end of the menu.list file. I can boot into Linux as usual but trying to boot into Windows gives:
rootnoverify (hd1,0)
map (hd1) (hd0)
map (hd0) (hd1)
makeactive
chainloader +1
Error 13: invalid or unsupported executable format
The Windows install will boot up if I disconnect the Linux disk so I must have the boot order issue. I am now at a loss at what to do next.
Lots of words telling a story, but no real information. You say you
added another drive, but you do not mention the
contents of the new drive. You previously had Linux on
/dev/sda but don't give the actual partitions. Linux sees all drives as SCSI drives, all will be
/dev/sdx whether they are SATA or PATA, so it's unimportant how you have made the actual connections. The second drive would then be
/dev/sdb. From the BIOS and GRUB perspective, it would be
(hd1), the boot drive always being
(hd0).
I guess we can assume the third drive is the one that has Windows installed, so the BIOS and GRUB see it as
(hd2) which would then require a Windows stanza that reflects that. Assuming again, that the Windows installation is on the
first partition of that drive, would then make the stanza;
title Windows
rootnoverify (hd2,0)
map (hd2) (hd0)
map (hd0) (hd2)
makeactive
chainloader +1
We wouldn't have to guess, and/or assume, if you'd clearly state the relevant information, in its correct form, from the start.
