How can I find out where GRUB was installed?

Solution 1:

Take a look at the Boot Info Script:

# ./boot_info_script.sh 

boot_info_script version: 0.60        [17 May 2011]

Identifying MBRs...
Computing Partition Table of /dev/sda...
Computing Partition Table of /dev/sdb...
Searching sda1 for information... 
Searching sda2 for information... 
Searching sda3 for information... 
Searching sdb1 for information... 

Finished. The results are in the file "RESULTS.txt"
located in "/root/".

and the results:

============================= Boot Info Summary: ===============================

 => Grub Legacy0.97 is installed in the MBR of /dev/sda and looks at sector 
    178241 on boot drive #1 for the stage2 file.  A stage2 file is at this 
    location on /dev/sda.  Stage2 looks on partition #1 for /grub/grub.conf..
 => No boot loader is installed in the MBR of /dev/sdb.