Re: bootrecord on extended partitiion

[Michael Evans]

On Fri, Feb 26, 2010 at 7:21 PM, Arand Nash <address@hidden> wrote:
> I've been using grub-legacy to boot grub via the bootrecord of an extended
> partition, since having a multiboot setup where all other primary
> partitions, including the mbr, are dedicated otherwise and I need the
> bootrecord of grub on a "primary" partition to be able to use it with the
> somewhat weird setup I've got (one button boots the mbr, another button
> boots the grub-associated bootrecord)
>
> In grub legacy it was a simple matter of specifying to install to (hd0,3)
> (or sda4). But in the new grub2 this no longer works and just gives
> "grub-setup: error: no such partition" or "Invalid device `/dev/sda4'".
> I've tried grub-setup with --force but no luck.
> Is there any way to use the grub tools to do this, and if not, are there any
> way to do it in a more manual fashion and create the bootrecord image
> correctly and then simply dd the image onto sda4?
>
>
> This is the fdisk output, goal is to have the "mbr" (br) on sda4 boot grub
> files from sda6
>
> Disk /dev/sda: 320.1 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x00000080
>
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1               1        2550    20482843+  c7  Syrinx
> /dev/sda2            2551        6375    30720000    7  HPFS/NTFS
> /dev/sda3            6375       10836    35837098    7  HPFS/NTFS
> /dev/sda4   *       10837       38913   225528502+   f  W95 Ext'd (LBA)
> /dev/sda5           10837       35726   199928893+   7  HPFS/NTFS
> /dev/sda6           35727       38427    21695751   83  Linux
> /dev/sda7           38428       38913     3903763+  82  Linux swap / Solaris
>
>
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>

Have you tried using (hd0,6) and installing to the area at the start
of your linux filesystem?