Dualbooting with Bootcamp screws up

Discussion in 'macOS' started by akwmgp, Jun 4, 2025.

  1. akwmgp

    akwmgp MDL Novice

    Dec 12, 2024
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    Can someone assist me with bootcamp?

    I have an early 2011 macbook pro (A1286) that I would like to dual boot with high sierra or big sur (opencore) and any version of windows. Everytime I attempt this the install stops saying that the drive is mbr and needs to be gpt. I can't fix this since bootcamp did all the formatting. The one time i formattedbthe drive myself i got windows installed and when i restarted my macbook something messed up cause I could not boot into windows again. Can someone tell me what I'm doing wrong?