Rec. Mac OS

Question: Q: Mac OS X can’t be installed because a recovery system cannot be made I recently deleted my hard drive to reset everything, and I went to reinstall the OS X. When it started installing mountain lion, the installation instantly stopped and the computer said that Mac OS X can’t be installed because a recovery system can’t be. MacOS has a plethora of built-in features and tricks to make productivity easier and one of them is the ability to record the contents on your screen using the in-built Quick Time Player. Choose Reinstall macOS (or Reinstall OS X) from the Utilities window. Click Continue, then follow the onscreen instructions to choose your disk and begin installation. If the installer asks to unlock your disk, enter the password you use to log in to your Mac. Users of Mac OS X 10.10, 10.11,10.12, 10.13, and 10.14 can use Data Rescue to create a special startup drive for simple recovery of a non-booting internal drive. Unfortunately, the developers of Data Rescue are unable to support this feature in Mac OS X 10.15 and newer due to the restrictions imposed by Apple.

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These key combinations apply only to Mac computers with an Intel processor, not Mac computers with Apple silicon.

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To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.

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  • Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
  • Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
  • Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
  • Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
  • D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
  • N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
  • Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
  • T: Start up in target disk mode. Disabled when using a firmware password.
  • Command-V: Start up in verbose mode. Disabled when using a firmware password.
  • Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.

If a key combination doesn't work

If a key combination doesn't work at startup, one of these solutions might help:

  • Press and hold all keys in the combination together, not one at a time.
  • Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
  • Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
  • If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
  • If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.

Remember that some key combinations are disabled when your Mac is using a firmware password.

Learn more

  • Keyboard shortcuts that you can use after your Mac has started up.

Rec Master

I recently deleted my hard drive to reset everything, and I went to reinstall the OS X. When it started installing mountain lion, the installation instantly stopped and the computer said that Mac OS X can’t be installed because a recovery system can’t be created. It asked me to restart my computer and I did, but now this message comes up every time I restart my computer into OS X. Also if you’re wondering, I do have Boot Camp installed, with windows 8.1.


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Rec. Mac Os X

Thanks in advance to anyone who helps!

Rec. Mac Os Download

Posted on Jun 8, 2017 2:57 PM