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Jerezanito

macrumors member
Original poster
Aug 12, 2011
67
1
Hi I need help from the experts recently updated my MacBook pro 2015 from osx Sierra to osx catalina I have a Windows 10 installed on Bootcamp but now I can’t find the mac partition to set up the startup on control panel on windows only shows when l’m using mac in the system preferences any ideas to fix this issue please thank you..
 

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DeltaMac

macrumors G5
Jul 30, 2003
12,515
3,858
Delaware
One of the (major) things that happens when you update from Sierra to Catalina is that the format for the drive is updated from HFS+ (MacOS Extended) to APFS.

And, short story, Windows doesn't see any APFS partitions.
If your MBPro now only boots into Windows, but you know that the Catalina system should work, reboot holding the Option key to open your boot picker screen. Choose your Catalina system, and press return to continue that boot.
When you boot back to your Catalina system, Open System Preferences, then Startup Disk pref pane. Set the boot disk to your macOS boot volume. You will need to unlock that pane by clicking on the padlock.
Change the boot drive. Now, if you want to boot back to Windows, go through that Option-boot picker screen to choose the Windows boot drive. And, don't change the boot disk to select Windows while booted to Windows. A simple restart from Windows will then boot automatically to your Catalina system.

edit: Look for the Apple Software Update, while booted to Windows.
Open that Apple Software Update, and run it. You may find out that it will update the BootCamp control panel, and that updated version should see your Mac boot volume.
 
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Jerezanito

macrumors member
Original poster
Aug 12, 2011
67
1
One of the (major) things that happens when you update from Sierra to Catalina is that the format for the drive is updated from HFS+ (MacOS Extended) to APFS.

And, short story, Windows doesn't see any APFS partitions.
If your MBPro now only boots into Windows, but you know that the Catalina system should work, reboot holding the Option key to open your boot picker screen. Choose your Catalina system, and press return to continue that boot.
When you boot back to your Catalina system, Open System Preferences, then Startup Disk pref pane. Set the boot disk to your macOS boot volume. You will need to unlock that pane by clicking on the padlock.
Change the boot drive. Now, if you want to boot back to Windows, go through that Option-boot picker screen to choose the Windows boot drive. And, don't change the boot disk to select Windows while booted to Windows. A simple restart from Windows will then boot automatically to your Catalina system.

edit: Look for the Apple Software Update, while booted to Windows.
Open that Apple Software Update, and run it. You may find out that it will update the BootCamp control panel, and that updated version should see your Mac boot volume.
Thank you I'll follow your comments very helpful
 
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