Mar 06, · For some purposes, you may need to dual boot two operating systems like Windows 7 and Windows 10, Windows 8 and Windows 10, a Linux OS and Windows 10, etc. However, some of you may encounter dual boot option missing problem. I have installed Windows 7 and Ubuntu in dual mode in different drives. I replaced Windows 7 with . Jan 22, · I'm not sure I understand, NavyLCDR. Some time ago I did add Windows 10 to the W7 boot menu, with bcdboot E:\ Windows. That worked fine: Windows 7 Boot Manager can see both disks and offers both W7 and W The problem is that Windows 10 can see only the SSD - so I cannot use bcdboot to add the other disk, i.e. the HD.
Learn More