A friend just recently bought a MacBookPro10,1 (MacBook Pro Retina, 15-inch, Mid 2012) off of craigslist, it all checked out and worked fine until we erased the hard drive and reinstalled Mavericks (downloaded Mavericks from AppStore on my computer and used DiskMaker X v3.0.4 to create a bootable usb).
It would go through first stage of install (copying files), but after reboot it would hang on the Apple logo plus spinning gear thing. We figured out it would only boot in Safe Mode.
After a few hours of reinstalling and resetting stuff like NVRAM/PRAM and trying to get into AHT(unsuccessfully) and a bunch of other things, it finally would boot normally(without Safe Mode or any other keys pressed on boot).
It was very exciting, except on further use, some of the system images would come up odd colors and distorted/noisy. And it even freezes sometimes.
I guess it might be a graphics issue(?), but what would cause only some images to be like this? Is it still recoverable? Has anyone else had similar issues?
I really appreciate any help in advance! Thanks!
Best Answer
It sounds like your USB did not contain the clean bootable version.
I would suggest you start over and follow the procedure from Apple.
You can get a copy of 10.9.5 from here or from Apple Store.
http://support.apple.com/kb/DL1761
Make sure the USB is single partition and minimal 8 Gig. (no other partitions on that disk)