[SOLVED] Bootmgr missing unless empty drive is connected

Cameron231099

Honorable
Nov 16, 2014
26
1
10,535
0
Hey. Was cleaning my PC due to unsatisfactory CPU temps. Also did some cable management. Couldn't get the system to boot due to no Bootmgr, even though I have 3 installs of windows across 4 drives as redundancy. Couldn't boot to any of the drives, even when only one was plugged in. Seemingly not a sata issue, since my main windows drive is an NVME SSD, so no issues with driver numbers being mixed up. Took a few hours, but finally got the system to boot, with all OSs being picked up only when a completely empty SSD was plugged into the system that I had just removed as it was unused. ( View: https://i.imgur.com/TmXV97O.png
).

Any ideas what could be causing this? Thanks.
 

Colif

Win 10 Master
Moderator
you are looking in the wrong place
open disk management
you will find an unlabelled partition on that drive that PC is using to boot the other drives. was it in PC when you installed onto others? Win 10 just added their boot info to its partition each time.
 

Cameron231099

Honorable
Nov 16, 2014
26
1
10,535
0
Have only the drive that doesn't boot in the system and boot up the windows installation usb/dvd and let it repair the boot, it might need to do that a few times.

Another way is from within windows using easybcd, you should look up a guide if you go that way.
The original OS was win7, upgraded to 8, 8.1 then 10, so no install CD here 😔
I'll check out easybcd tho, cheers.
 

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