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18 Janvier 2021
Mar 12, 2020 On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. It installs an app named Install OS X El Capitan into your Applications folder. MacOS is the operating system that powers every Mac. It lets you do things you simply can't with other computers. That's because it's designed specifically for the hardware it runs on — and vice versa. MacOS comes with an entire suite of beautifully designed apps. The Utilities folder on the Mac OS X CD contains Startup Disk version 9.2, the control panel you use to select the startup disk for your computer. You need to use this version of Startup Disk to. 7 Lion did away with recovery disks, and these days, Apple provides a built-in recovery system within Yosemite. Start your Mac and hold Command + R to go into recovery mode, from which.
You mentioned troubleshooting, did it include these:
NVRAM reset

Shut down the MacBook Pro. Start it and immediately hold down Command, Option, P and R keys at the same time. Wait until you hear the startup chime for the third time before letting go.
Also, SMC reset may be needed (that usually doesn't fix a missing boot partition, though).
Online audio recording software, free download.
Restart and hold down the D key to enter the Hardware Test. Follow the instructions.
When booted externally, use Finder's Go menu to open Utilities. Launch Disk Utility and look for any signs of your internal drive in the list of hard drives on the left. If you find it look for First Aid and try to use it on the disk.
Refer to the following to see if it takes you anywhere you haven't been yet.
Feb 10, 2017 3:37 PM
