Got the following error The path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged while upgrading Mac Mini (Late 2012) to High Sierra. The only option on the screen is to restart, after which the same error pops up. Here is how I solved this Before trying anything first backup data using terminal in recovery mode.

Once you are safe even to lose data, then follow these steps • create bootable usb as mentioned in this link • Select Install or upgrade macOS from booting the usb • After four hours of suspense, I was greeted with my account and all data is intact During installation it was unclear if mac is updating or installing fresh but somehow it worked and disk format is same as old Mac OS Extended (Journaled). The easiest solution is the one by commenter. It has worked on most of the 10 Macs I've seen have this issue. Apparently, merely selecting the correct Startup Disk in the Apple Menu (and unlocking it if necessary with the FileVault password) makes the Mac startup properly again. This can be done at the error screen (click on some empty space in the message box to get the menu bar to appear).

[Guide] Success! Install 10.8 on old unsupported Mac. I assume you need a modified OSInstall.mpkg to get the installer running. Feb 18, 2012 [Guide] Success! Install 10.8 on old unsupported Mac. I assume you need a modified OSInstall.mpkg to get the installer running. El Capitan 10.11 MBR Patched OSInstall.mpkg and OSInstaller.framework to allow OS X 10.11 installation on MBR partition. To use those patched files you must follow. I am trying to do a fresh install of high sierra on my hackintosh. It gets through the initial copy, but when it reboots and goes to continue the.

This can also be done by starting up the Mac in recovery mode (cmd+r). Finally, re-installing MacOS on top if itself also solves the problem, but takes more time. Internet Recovery (cmd+optn+r) or a Mac OS bootable USB installer both work and in theory do not delete any personal data. It may be advisable to update the MacOS to the latest point update (e.g. 10.13.3) immediately after resolving the issue, as I've seen it recur more than once on the same computer.

This install actually crashed my HD. I hadn't noticed that the drive was nearly full before the update started, but during the install process the HD maxed out and then became unmoutable or mountable, and not recognized. Fortunately it was backed up but there should be a check on available disk capacity before starting the install process. In any event, here was my fix: Start the Mac in recovery mode - Command-Option-R Open Terminal Get a list of volumes by: $ diskutil list Note the HD reference (mine was disk0s2) kill fsck: $ ps -ax grep fsck (to get the process number) $ kill Erase the volume $ diskutil eraseVolume JHFS+ MyVolumeName /dev/disk0s2 Then install the update as a new install. First boot to the recovery partition open terminal and type csrutil disable, then restart your Mac and hold CMD+S till you see plain text. Now plug in another pendrive and then press enter.