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downgrade os

  1. newbtomacs

    hard drive used for time machine backup is not showing content when I downgrade from BigSur to Catalina

    I was running BigSur on a mid 2015 iMac, but realized that I needed to downgrade to Catalina to run a specific program. I bought a WD HDD, used time machine to back up my computer, and then successfully erased my iMac and installed Catalina. However, now I can't see the contents of my WD hard...
  2. Old Ndungu

    iMovie incompatible with OS

    I'm running an early 2015 MacBook Air with Sierra 10.12.6 I have recently started editing video. I have iMovie 9.0.9 installed. There appears to be an incompatibility between these, such that my shared/saved videos are colour washed-out. I'm caught in a situation where my computer cannot run...
    • Old Ndungu
    • Thread
    • downgrade os imovie incompatibility
    • Replies: 13
    • Forum: Mac Apps
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