gistfile1.txt

(parted) select /dev/sda
Using /dev/sda
(parted) print                                                            
Model: ATA ST31500341AS (scsi)
Disk /dev/sda: 1500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system     Flags
 1      1049kB  2147MB  2146MB  primary  linux-swap(v1)  raid
 2      2147MB  2684MB  537MB   primary  ext3            raid
 3      2684MB  1500GB  1498GB  primary  ext4            raid

--------------

~# grub-install /dev/sda
Installation finished. No error reported.

gistfile2.txt

(parted) select /dev/sdb                                                  
Using /dev/sdb
(parted) print                                                            
Model: ATA WDC WD15EARS-00M (scsi)
Disk /dev/sdb: 1500GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name        Flags
 1      1049kB  2147MB  2146MB  linux-swap(v1)  Linux RAID  raid
 2      2147MB  2684MB  537MB   ext3            Linux RAID  raid
 3      2684MB  1500GB  1498GB  ext4            Linux RAID  raid

--------------

~# grub-install /dev/sdb
/usr/sbin/grub-setup: warn: This GPT partition label has no BIOS Boot Partition; embedding won't be possible!.
/usr/sbin/grub-setup: error: embedding is not possible, but this is required when the root device is on a RAID array or LVM volume.