Windows7 on sda and Fedora 13 on sdb

[Polywog]

Windows 7 is first boot disk. Installed Fedora 13 on second disk from DVD. During installation it did not ask if I wanted dual boot. Fedora installed fine on second disk. Rebooted and only Windows will lood. How to setup to dual boot? Can I modify Windows Boot file? or do I have to install Grub on to sda. How do I do that?

[Kameraad Pjotr]

The problem is that your BIOS only boots your first hard drive (sda), which has only the Windows Boot loader installed. The best thing you can do is to get a LiveCD, and enter the grub prompt (open a terminal and enter grub as root)

grub> find /boot/grub/stage1

The result of that (e.g. hd1,0) is the partition and hard drive where your grub installation resides. (If you have not created a separate boot partition, it is probably (hd1,0) i.e. first partition on /dev/sdb )

grub> root (hd1,0)
grub> setup (hd0)

This will install grub to your MBR.
More information can be found in this (http://www.fedoraforum.org/forum/showthread.php?t=975) thread.

[DukeNukem]

The fedora install may have already created a dual boot setup.

Go into your system bios and change the hard drive boot order, make your secondary disk boot 1st.