Recently I have decided to reinstall Vista and also remove Windows 7 BETA and install Windows 7 Release Candidate. I have ran into some issues with partitioning though.

Right now I have an ext3 partition for Ubuntu 9.04, and a 1GB linux-swap partition for the Linux swap I guess. Windows Vista is installed on /dev/sda1, which is obviously NTFS, and Windows 7 is installed on /dev/sda3, again NTFS.

We all know that installing Windows (or even repairing it) will wipe out GRUB and put on the Windows Bootloader. I kind of installed the operating systems in the wrong order so I ended up with the ability to boot into Windows Vista only.

I have reinstalled GRUB, and now I can boot into Ubuntu as well as Vista, but when I choose to boot into Windows 7 from the GRUB menu, I see that "BOOTMGR.EXE is missing. Press CTRL+ALT+DEL to restart".

I can probably put the Windows 7 RC DVD in and go through startup repair or fixmbr, but is there an easier way because I don't like having to reinstall GRUB.

Any help would be appreciated, and no I am not reinstalling all of my operating systems.