Doug wrote: > And disconnect the Windows drive > when you install Linux.
completely paranoid approach, but if you are not sure in what you are doing, it is justified. However for the record it is not necessary to do any of this and even not required to have 2 drives, unless you do some windows factory reset that would swipe your disk. I would recommend making backup upfront such operations. if grub does not recognize your windows partition, you better look into grub configuration, or add a file like /etc/grub.d/25_windows with following insmod part_msdos insmod ntfs set root='hd0,2' chainloader +1 where hd0 is first drive and 2 is second partition - adjust to match your setup regards