I used Disk Utility in recovery to erase the hard drive and then reinstalled OS Mountain Lion, but for some reason it seems to have lots of problems. MacBook Pro 13' Retina early 2013 lost power during update Hello, I have been trying to fix a 13' MacBook Pro Retina early 2013 that was shut down during an update by a friend. Also, isn't that how Time Machine is supposed to work?) I've always wondered if some drivers or library files were overwritten that were required for this 2012 laptop but you'd think that all the many OS updates and the app store updates would have noticed and fixed the problem. It could have been Snow leopard but I don't think so. Then I restored from my older computer via Time machine which had mountain lion I believe. (One side not here is, I bought this with a fresh version of Lion reinstalled to factory settings. I would really appreciate a FIX to the ongoing problem and not a reformat workaround. It's insane but I don't see any fix to why my system is haywire. I just can't always be expected to reformat ever drive I borrow or own. There has to be a fix other than reformatting every darn card to the Mac version of MSDOS Fat.

I have not had that pleasure since I bought this computer. Worse I keep reading on all kinds of support threads that Mac OS is indeed supposed to read and write to fat32. Now I'm trying to transfer some GoPro update onto the card and it's driving me nuts. Can't add or even delete (which is 'fun' for overfull memory cards, let me tell you.) Any hard drive, USB, or memory card device that is formatted in Fat32 (which is most camera related ones) will not allow my Macbook 2012 (High Sierra) write.

How split files on mac for fat32