Re: Unable to boot windows due to grub rescue menu
The various options on how to install vary on whether you get a choice on where to install the boot loader - grub2.
Autoinstall essentially assumes you are installing to one drive and installs grub to sda. Usually BIOS is set to boot from sda, so then you can boot with grub. But if installing to an external or any second drive, that may not be where you want grub. If you use the Something else or manual install, then you get the option of a combo box at the bottom of the partitioning screen on where to install the grub2 boot loader. It usually presents partitions also which you almost never should use.
The Windows repairCD or flash is only about 256K.
Make your own Windows repairCD (not vendor recovery):
Windows 7 repair USB, Also Vista if service pack installed
Oldfred on vacation with no real computer access. (when you are retired is it still a vacation?)
May 23 thru June 5.