![]() ![]() Mac models introduced after Mac OS X 10.7, Lion, include the ability to start up directly from an Internet-based version of the OS X Recovery system. There is a a solution that requires an Internet connection. If the copying command doesn't work, check that the file exists on the Recovery HD. If the fix works, now would be an excellent time for another backup snapshot.ġ Not all system files are on the Recovery HD, but many are. I recommend that you do a permissions repair using Disk Utility after copying a file manually and then rebooting. If you've got the ability to reinstall OS X through the Recovery HD, Internet Recovery or an OS X install media then reinstalling OS X will 'repair' your install and copy any missing/broken system files back to your system. Sudo cp -p /Volumes/OS\ X\ Base\ System/$Įven if you have deleted the cp binary (which could happen), there is /usr/bin/ditto, /usr/bin/tar and several other commands that can stand in for cp. Mount the BaseSystem.dmg hdiutil mount /Volumes/Recovery\ HD//BaseSystem.dmg Mount the Recovery HD diskutil mount Recovery\ HD ![]() Many 1 system files are also included on the Recovery partition and can be copied over. If you don't mind or are sure your Recovery HD is patched to match the OS on your main system, you can snag a file and see if it works without needing to do a full reinstall of the OS and without needing a restart or an internet connection / saved installer.
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