Install Mojave

[anpaman]

Hi all

Now I was use High Sierra on my Macbook pro 2017 if I have upgrade to Mojave through app store then found some app wasn't compatible with Mojave and I want back to High Sierra how do it ?

Does by press Commmand + R keys would reisntall it High Sierra ?

Thank

 

[Fishrrman]

This IS NOT an easy job.

You have to:
1. Back up your personal stuff (or it will be GONE)
2. Download a copy of the Mojave install app
3. Create a bootable USB flash drive (I suggest using the free "diskmaker x" for this)
4. BOOT FROM the USB installer
5. ERASE the internal drive to Mac OS extended with journaling enabled, GUID partition format
6. Install a fresh copy of High Sierra
7. RESTORE YOUR DATA when the install is complete.

A BIG job.
Do you really, really need those apps that aren't compatible...?

 

[Taz Mangus]

Hi all

Now I was use High Sierra on my Macbook pro 2017 if I have upgrade to Mojave through app store then found some app wasn't compatible with Mojave and I want back to High Sierra how do it ?

Does by press Commmand + R keys would reisntall it High Sierra ?

Thank

You can try out Mojave without needing to touch your High Sierra install. Create a new partition on your internal drive through Disk Utility. Download the full Mojave installer: https://apps.apple.com/us/app/macos-mojave/id1398502828?mt=12. Run the installer and have it install to your the new partition. When it finishes restart to the Mojave partition, and try the software and see if it works under Mojave. When you are done, restart back to your High Sierra install and remove the new partition. If you like Mojave now you can upgrade your High Sierra to Mojave, if you don't then you don't need to do anything.