[CentOS] problem configuring grub for a dual-boot

Thu Aug 8 10:33:12 UTC 2013
Ljubomir Ljubojevic <centos at plnet.rs>

On 08/08/2013 12:04 PM, Vanhorn, Mike wrote:
> I tried the suggestion of swapping the disks assignments:
>> Try telling grub to swap the disks:
>>>   title Windows 7
>> map (hd1) (hd0)
>> map (hd0) (hd1)
>>>   rootnoverify (hd1,0)
>>>   chainloader +1
> But that still just gets me
>   invalid EFI file path
>   Error 1: Filename must be either an absolute pathname or blocklist
> I think that my failing is something to do with grub and EFI. In the
> anaconda-generated  grub.conf file, there is a line that reads
>   device (hd0) HD(1,800,64000,9b55c4a9-fdbe-4fcd-857b-8e7e129e29f9)
> I have no idea where that UUID came from, as both blkid and ls -l
> /dev/disk/by-uuid do not have entries for the disks themselves, just for
> the partitions. Maybe that isn't even a UUID. At any rate, I'm wondering
> if there should be a similar entry for the other disk in the system.
> ---
> Mike VanHorn
> Senior Computer Systems Administrator
> College of Engineering and Computer Science
> Wright State University
> 265 Russ Engineering Center
> 937-775-5157
> michael.vanhorn at wright.edu
> http://www.cecs.wright.edu/~mvanhorn/

Check this bug: https://bugzilla.redhat.com/show_bug.cgi?id=880030

And search the net for 'device (hd0) HD(1,800", you will get interesting 
texts that might help you.

Ljubomir Ljubojevic
(Love is in the Air)
PL Computers
Serbia, Europe

StarOS, Mikrotik and CentOS/RHEL/Linux consultant