1. BBGary's Avatar
    Hi
    Is it possible to downgrade to original OS that the MBP was purchased with?
    11-22-2013 11:24 AM
  2. warcraftWidow's Avatar
    You should be able to wipe the drive and reinstall provided you have the install files on a bootable USB or DVD. But I've never tried it myself. It would mess up any Time Machine backups you might have though.
    11-22-2013 11:37 AM
  3. SeanHRCC's Avatar
    You can make a bootable disc/USB for Mountain Lion (OS X 10.8) pretty easily...after that, it's simply a matter of making sure you have your files backed up and then targeting the drive you want to reformat with Mountain Lion (this wipes the drive FYI, so make sure your back up is externally saved). From what I understand, Time Machine does NOT back up the OS, just the files, and will write them to whatever OS it is presented to (double check before you do it, but I think that is accurate).
    11-22-2013 01:00 PM
  4. BBGary's Avatar
    You can make a bootable disc/USB for Mountain Lion (OS X 10.8) pretty easily...after that, it's simply a matter of making sure you have your files backed up and then targeting the drive you want to reformat with Mountain Lion (this wipes the drive FYI, so make sure your back up is externally saved). From what I understand, Time Machine does NOT back up the OS, just the files, and will write them to whatever OS it is presented to (double check before you do it, but I think that is accurate).
    How do you do it if the laptop is 10.9?
    11-22-2013 01:20 PM
  5. SeanHRCC's Avatar
    There are several ways to obtain a copy of the OS, you just have to find one that you feel comfortable with (google is your friend in this regard). You would simply download the bootable file and transfer it to either a disc or USB drive (the latter is easiest and least time consuming obviously).

    Backup like normal.
    11-22-2013 01:35 PM
  6. BBGary's Avatar
    Thanks


    Sent from my iPhone 5s using iMore Forums mobile app
    11-22-2013 01:48 PM

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