Issue with starting on the second drive during dual boot setup

F5F Stay Refreshed Hardware Desktop Issue with starting on the second drive during dual boot setup

Issue with starting on the second drive during dual boot setup

Issue with starting on the second drive during dual boot setup

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SoyDash
Posting Freak

859

08-07-2025, 06:39 PM

#1

Hello everyone, I’m using a second Windows drive for work purposes. It has built-in antivirus, so I keep it on a separate drive and only access it weekly. Everything worked last week except this week when I changed the letter assigned to each drive. The second drive is showing an error saying: "An operating system wasn't found." I tried disconnecting all drives, but the one I want to boot into didn’t come up. I’m trying to set it active and found instructions here (the disk is MBR) – https://windows101tricks.com/operating-s...indows-10/. I don’t know what to do next, any advice would be greatly appreciated.

S

SoyDash

08-07-2025, 06:39 PM #1

Hello everyone, I’m using a second Windows drive for work purposes. It has built-in antivirus, so I keep it on a separate drive and only access it weekly. Everything worked last week except this week when I changed the letter assigned to each drive. The second drive is showing an error saying: "An operating system wasn't found." I tried disconnecting all drives, but the one I want to boot into didn’t come up. I’m trying to set it active and found instructions here (the disk is MBR) – https://windows101tricks.com/operating-s...indows-10/. I don’t know what to do next, any advice would be greatly appreciated.