I had Windows 7 and 8 on a hard drive, then I decided to try Xubuntu, and installed it on a separate hard drive. Then I tried using EasyBCD, but Windows doesn't recognize Linux partitions. Additionally I removed the drive with Windows while installing Xubuntu, just in case... So, how can I add it to the boot list?
How to dual boot Xubuntu with Windows 7 & 8 from separate drives
grub2;dual boot;xubuntu
For dual boot with separate hard drives, you'll have to change the booting sequence in your BIOS.For example, if Win8 is on C drive, and Xubuntu is on D drive. If BIOS boots up C drive first (before D drive) then your computer will load Win8. Furthermore, simplified solutions exist via third party companies such as Parallels.   