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reinstall format

  1. Teenso

    MBP Mid-2015 "An error occurred while preparing the installation. try running application again."

    So I'm trying to erase and format the computer back to basic as it came when I bought it. I'm running into some issues. I have done both Internet recovery and Recovery mode and when choosing reinstalling MAC OS I go through the steps and when it's almost done I get the error message seen on...
    • Teenso
    • Thread
    • erase failed mbp 15 2015 reinstall format
    • Replies: 1
    • Forum: MacBook Pro
  2. O

    Can't seem to reinstall Mac OS

    I have a MacBook Pro (2013) which acted up a bit, it became very slow and was not responding all the time. So I wanted to reinstall Mac OS, I had El Capitan installed. I did the Command + Option + R on boot and after various tries it always failed, mostly due to the inability to unlock the disk...
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