![]() If not, we’re always looking for new problems to solve! Email yours to including screen captures as appropriate. We’ve compiled a list of the questions we get asked most frequently along with answers and links to columns: read our super FAQ to see if your question is covered. The pre-10.12.4 option is simply Command-Option-R, but it acts like the new Shift-Command-Option-R, installing the shipped OS or the oldest compatible version.)Īpple recommends the Command-Option-R option as the only safe way to reinstall a Mac with El Capitan or earlier versions of macOS if you want to be sure your Apple ID doesn’t persist even after erasure. (Apple just changed this behavior with 10.12.4, but if you’re using Internet Recovery for a clean install on an erased drive, the new behavior should be active as it will be pulled from the version of Recovery that’s bootstrapped from Apple’s servers. (Apple doesn’t document that, and I haven’t had to test that for years.) In that mode, when you choose to reinstall without erasing the drive, my recollection is that Recovery looks for the current OS system installer on your startup disk in the Applications folder, and uses that. That allows you to run Disk Utility, reinstall or wipe and install the system, access Terminal for command-line functions, and so on. Normally, you can start up a Mac while holding down Command-R to boot into what Apple now calls macOS Recovery. The article includes instructions on obtaining the installer, which might involve you having to use someone’s else Mac to download it, if you don’t have a replacement Mac on hand yet.īut if you can’t get access to another Mac or the necessary drive, it’s still possible to use a different Recovery mode on all recent Macs, dating back to 2010. We have instructions for making a bootable installer with macOS Sierra (as well as archived versions for several previous releases). The status indicator light turns solid amber.Recovery lets you install onto an erased partition, but only if Recovery wasn’t erased, too!īecause Recovery didn’t work, the fastest way to install fresh is to make or borrow a macOS installer on a USB flash drive or a disk drive. While holding down the power button, connect Mac Pro to power and continue to hold down the power button for about 3 seconds. Plug the other end of the cable into the Mac that you will use to restore Mac Pro. ![]() Plug the USB-C cable into the Thunderbolt port farthest away from the power button. Plug in a monitor so you can see when the process of restoring the firmware is complete. Reconnect all cables, except the power cord, to your Mac Pro. Mac Pro can’t start up until the housing is replaced and the latch is rotated to its original position. Slide the housing over the computer, then turn the latch clockwise 90 degrees to lock the housing. ![]() Use a T8 screwdriver to install the two screws that came with the new modules. Make sure to completely remove any existing modules, and only install the modules that came with your upgrade kit. Note: You cannot mix and match existing modules with newly purchased upgrade kit modules. ![]() Safety, handling, and regulatory information.Back up, restore, and transfer your data.Detach Pro Display XDR from a VESA Mount Adapter.Attach Pro Display XDR to a VESA Mount Adapter.Magic Keyboard with Touch ID and Numeric Keypad.
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