Startup issue

mlubov

Registered
Recently when I boot my Mac it tries to start in Time Machine. I have to hold down the option key to select the Mac system. I also have Boot Camp on the computer and have the same problem when I try to go back to Mac from Boot Camp. My only disk choices are Time Machine & Boot Camp. Using the Option key allows me to get to the Mac without going through Utilities. How can I fix this?
 
If you are struggling with CHANGING the boot disk when you are booted to Windows, then I suggest that you do not change the selected boot disk. Boot to your macOS system. Open Startup Disk (in your System Preferences), and make sure that your macOS boot disk is selected.
Go through the Option-boot screen to boot to your Windows system. The macOS boot system remains selected, because you don't change that setting. When you are done using Windows, simply restart. Your macOS system is still selected, so it will boot to that by default.
This will work, because your boot disk settings don't change.
(Your Time Machine backup is also bootable, so if that contributes to your issue, just disconnect the Time Machine drive when you are using Windows. Time Machine doesn't backup anything unless you are actually booted to your macOS system. Reconnect the backup drive when you boot back to your macOS system.
 
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