My Dell Inspiron 510m notebook had Win XP installed when new and I recently added Ubuntu 11.04 to make a dual boot system.
Info from boot_info_script:
Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of the same hard drive for core.img. core.img is at this location and looks for on this drive.
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 63 96,389 96,327 de Dell Utility
/dev/sda2 * 96,390 43,118,459 43,022,070 7 NTFS / exFAT / HPFS
/dev/sda3 43,118,460 53,624,969 10,506,510 c W95 FAT32 (LBA)
/dev/sda4 53,626,878 117,209,087 63,582,210 5 Extended
/dev/sda5 53,626,880 74,106,879 20,480,000 83 Linux
/dev/sda6 74,108,928 76,197,887 2,088,960 82 Linux swap / Solaris
Now I am trying to install OpenSUSE 12.1 so that I will have a triple boot system. I made 20 GB free on the 60 GB harddisk using a live
GParted CD and started the installation from a DVD which I had made from the downloaded ISO file (i586 version). Everything went well
until I came to the summary of the proposed installation before the actual installation process starts. It showed the following:
. Boot loader type: GRUB
. Status location: /dev/sda4 (extended)
. Change location
. Boot from MBR is disabled (enable)
. Boot from “/” partition is disabled (enable)
+ open suse 12.1 (default)
+ Failsafe - open suse 12.1
Several of these entries gave me concern.
Why is Ubuntu not seen (I suspect that this may be current OpenSUSE practice)? What is the meaning of 'Boot from MBR is disabled'? Is this the normal boot into Windows as the original MBR used to do? What is the meaning of 'Boot from "/" partition is disabled'? Is this the boot as installed by Ubuntu? If I change this to 'enable' what effect does this have?
I suspect that the OpenSUSE installation assumes because it found a Windows partition that the original Windows MBR is on the disk
and will replace it with an MBR which will boot into GRUB which will be installed with the proposed new partitions for OpenSUSE.
My first idea is that I should try to install just the OpenSUSE 12.1 software, but not change the current boot as installed by Ubuntu 11.04
After that is done I can run ‘update-grub’ under Ubuntu which should find the OpenSUSE OS. Is there a way to prevent the boot being changed by the OpenSUSE installation process?
What is the simplest way for me to achieve the triple boot which I want?