First all your partitions are large enough to setup a 20 meg partition with no problems. To be on the safe side we should add the partition to sdb3 if you are now booting sda. Use your Gparted and make a new partition from sdb3.


Something to think about for the future is using one partition for / and one for /home,
and one for swap on larger distros. I noticed you have two swap partitions, you should only need one.I make / partition approx 12 gig and 10 for /home on larger distos then the 245 gig left I use for storing all my data which then is available to each one of my distros. I have limited myself to booting eight at present and four of them get ignored most of the time. I allowed for two smaller distros which each one is on 2 gig partiton.

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fdisk-l again
One gig or bigger I always say so the grub primary partition is 1g.

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#Boot from your live ubuntu cd the following commands

sudo mkdir /mnt/sdb3

sudo mount /dev/sdb3 /mnt/sdb3

sudo grub-install --root-directory=/mnt/sdb3 /dev/sdb

#Now we need to build a grub.cfg file

sudo nano /mnt/sdb3/boot/grub

#grub.cfg

set default ="0"

set timeout =12

menuentry "Windows" {
set root=(hd0,1)
chainloader +1
}

#Now save as grub.cfg and exit nano.

#Now we will see if everything works so far.

sudo rmdir /mnt/sdb3

sudo umount /dev/sdb3

#reboot and set sdb to be first boot in bios. If your windows #selection comes up it should #boot in 12 seconds or if you mouse #click it should start booting.

#If there are any problems just put sda to boot first in bios again.

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If you read this recheck above, I had a couple of errors that I corrected.

1 2

I'm trying to understand this before I do it because I want to learn about it.
This looks like-

1- First making a mount point to the live disk.

2- Mounting the grub partition to the live disk.

Normally there will be a root directory so we would not have to make one but we have not made a directory in the grub partition yet.There is not a directory at all.
I need to create a directory there correct.

sudo mkdir /mnt/sdb3 This is a directory used to mount the sdb3 partition.(may be named anything that you can remember, I used sdb3 because it is easy to remember.

sudo mount /dev/sdb3 /mnt/sdb3 This mounts the dir /mnt/sdb3 to /dev/sdb3.

sudo grub-install --root-directory=/mnt/sdb3 /dev/sdb This tells it to install grubs root directory to /mnt/sdb3 and write the master boot record of sdb.

After this operation the only file you will need to create is your grub.cfg.

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List of (Junk)_Rescue disks that could not (grub-install)

1- Fedora 13
2- CentOS 6
3- Ubuntu 7.10
4- SystemRescue

I think not mounting them to an Installed O.S was the issue but a rescue disk should not have to.

Various errors of not doing simple things they should. I made the wrong directory and made a menu.lst and they would not remove it.Gave up and used Knoppix.
Knoppix did it but listed errors. I does not work though. It hangs at a blank screen.

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Your distros all use grub legacy (1) not grub2. You will need to get a later version of ubuntu or say Linux Mint for grub2 or we can use grub legacy. The install directions are different.

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