Missing Operating System Error


New Member
I hope someone can help me on this. I performed a clean install of Vista Ultimate. My very first attempt was in my system with 2 new SATA drives. After I installed, I received the "BOOTMGR is missing" message. After some research, I reinstalled with only 1 drive. Successful install! Then I shutdown, added the second drive and am now receiving the missing OS message. If I disconnect the second drive, system boots fine.

With the second drive connected, I tried the Bootrec /fixmbr and Bootsect /nt60 commands documented in other posts. Those commands were successful, but when I tried bootrec /rebuildbcd, it could not find any windows installations.

BTW, with the second drive connected, I can boot into Vista if I have the installation DVD in the DVD drive. In that scenerio, I used the "write MBR" option in EasyBCD. Still no luck.

Thanks In Advance,


Mostly Harmless
Staff member
Hi Dave, welcome to NeoSmart Technologies.

Can you switch the two drives around and try to boot?