If you are able to resolve this problem, then you can initialize the drive and install macOS. See Fixing an Unable to Write to the Last Block of the Device Error. You cannot do anything to it with Disk Utility.
In a perfect world we'd keep Catalina working on its 50GB partition (as it is now) and use the rest for Windows.įirst, forget the image named Base System. I attached screenshots of the diskutil output below. But is this fixable? Any tips or suggestions on where to go from here? I'm not familiar with low-level mac concepts but I can work through diskutil commands if anyone can give me some direction. I feel like the machine should still be usable and has decent specs. I started googling diskutil options but I'm lost. I have a bit of IT background, but I'm not super technical. Boot camp says it can't do anything because the HD doesn't have a boot partition. :)Ĭurrently it does boot into Catalina, but it's showing boot errors on the disk, and diskutil will only give me a 50GB partition for the mac, and I can't create any new partitions or get rid of the "Microsoft Reserved" partition. Not sure what he did but I can ask if it's helpful. When he gave it back to me it wouldn't boot at all, but I managed to use Internet Recovery to reinstall Catalina. He's been playing with it and decided he wanted to install Windows, so he used bootcamp and it looks like he's made quite the mess.
#Reinstall mac os no disk pro
I recently upgraded and gave my old mid-2012 Macbook Pro Retina (16GB RAM, 256GB SSD) to my son. Possible to repair disk problem created with bootcamp? Hi Other potentially relevant information is that I had a Windows bootcamp partition but have been unable to load this at the start screen. Also, I am unable to erase or re partition either of them (either option is greyed out or the operation fails., see below).
However I only see 1x drive of 4GB, and 1x disk image of 2GB. I have seen some other users experience the same issue and recommend a re-partition in Disk Utility, so that the HDD is recognized. However, there are no disks showing when choose this option from the recovery screen (below). Now I have been trying a complete erase and reinstall of OSX. Since then I have only be able to reboot in recovery mode and the Mac will not enable access to the Airport to load a different image. After letting the back-up image load overnight, I only managed a glimpse of the login screen before the iMac shut itself down. It only rebooted in recovery mode, so I opted to restart from a Time Capsule image (on external Airport Extreme). My iMac (late 2013 model) had an issue about 1 week ago and I forced shut-down.
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