Mac Cleaner is such a professional Mac management tool that allows you to uninstall any problematic and unwanted apps and delete their associated files on Mac. Luckily, a helpful Mac maintenance utility can do you a good favor in this case. However, it’s not easy to uninstall the program and remove its associated files thoroughly. Moreover, Mac in safe mode will help you identify problematic programs, you need to remove them and clear the associated files to fix the problem. If your Mac starts or shuts down repeatedly in safe mode, you should contact Apple support or Apple Store for help. If there is any issue with your startup disk, it will repair for you and your Mac will automatically restart. When your Mac is started up in safe mode, it will automatically check the directory of your startup disk. If the issue does not happen again, it was probably caused by a cache or directory issue with your startup disk, and it has been fixed in safe mode.If the issue comes back, there might be some problem with one of your Mac programs.

If the issue doesn’t happen after you safe boot your Mac, please restart your Mac without pressing any keys. Try to use your Mac normally as you do before and check if the issues have disappeared in safe mode or are still there. Running your Mac in safe mode is normally used to troubleshoot Mac issues such as macbook crash, lag, or spontaneous closures of applications, etc. Note: If your startup disk is encrypted with FileVault, you need to log in twice: once to unlock the startup disk, and again to log in to the Finder. Step 3 Release the Shift key once you see the login window or the desktop. Step 2 When you hear the Mac startup sound, press and hold the Shift key. Step 1 Start or restart your Mac.code 50 show up. If you are using a Bluetooth keyboard, follow the steps below: Step 2 Release the Shift key once you see the login window. Step 1 Start or restart your Mac, then immediately press and hold the Shift key. If you are using a wired keyboard, follow the steps below:

Graphics acceleration is also disabled in OS X Leopard v10.5 or later.

Network file sharing is disabled in OS X 10.6 and later.

Some USB, FireWire, and Thunderbolt devices might be unavailable.

Some audio input or output devices might not work.

You can’t capture video in iMovie or other video apps.

You are not able to play movies in DVD Player.

How to start mac in repair mode