Mac Unable To Unmount Volume For Repair

For other ways to fix a Mac that won't start, check out our guides how to Use OS X boot options to troubleshoot your Mac and how to fix a Mac that won't start. MacOS 10.13 High Sierra keeps. External Hard Drive, Usb drive, Flash drive, Yosemite OS X, El Capitan OS X, Macbook pro, iMac, macbook air, macbook, macbook retina display, macbook retina display 2, mac pro, iMac retina 5k.

How to make bootable pendrive for windows 10 from iso file in mac. Click to expand.Hmm, I had the same problem. Try the following. Backup as much as possible.

Both Windows and Mac. Boot Mac, I assume you already downloaded macOS Sierra, so, go to mac partition and delete the macOS Sierra Install files. They're probably there, so just delete them. You should be left with Applications, Library, System & Users. And maybe EFI Backups. Mount EFI partition with script v3.

Install Clover to EFI, download config.plist (don't bother with iMac14,2 plist, just regular uefi config.plist, or legacy, IDK what you use) and put it in /EFI/EFI/Clover/. Also download and put FakeSMC.kext to /EFI/EFI/Clover/kexts/Other/ 5. MOST IMPORTANT STEP HERE: Unmount the EFI partition! Also unmount WINDOWS partition if you can see it from Mac! Run the Install macOS Sierra from Apps. Restart your PC.

Press space while hovering over Install macOS Sierra from Mac HDD, or something similar. Use ONLY 'without caches', at first. Give it a few minutes, install should start. Just let it do it's thing, it should restart after 10-20minutes and post a Apple logo with install continuing for around 10-15 more minutes. Give it more time, since I'm on SSD, and it's fast. I had the same problem and this is how I fixed it.

My PC lost clover boot entries later, but I explained in the other thread how I got them back, search for the threads I posted in. Now my dualboot is working again, just need to get audio to work. Had that problem today on a dual boot disk (Window+macOS) today, wanting to fresh-reinstall macOS on the partition it was installed before; having that issue, I've spent a lot of time trying to repair my partitions under Windows or Disk Utility (from the USB installer). Finally, what worked was: Do not limit yourself to erasing/recreating your old MacOs partition with disk utility. Maschine mk2 driver for mac os x 10.10 download. Run the partition tool (the one that allows you to resize/destroy/create partitions, reach it from the button in the left corner of disk utility).

Destroy the macOS partition, and recreate one. It will force macOS to rewrite the partition table, and then it'll be happy with it. That did the trick for me.