Sani1357 Said:
"Cant upgrade to macOS Catalina: Im having some issues on my sister’s computer. Right now the software version is macOS Sierra 10.12.6. When I go to software updates it takes me to App Store and says that there are no updates available."
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Perform this: Update to High Sierra First
To do so, you have to first backup your Mac, then erase the hard drive, then install High Sierra. Once Installed, perform the upgrade to Catalina.
Once Catalina is installed: Migrate it Over from the Time Machine Backup you Created.
5 Steps:
- First: create a Time Machine Backup (TMB) of your current Mac.
- Erase: your Disk
- Install: High Sierra
- Upgrade: to Catalina
- Migrate: Items over using Migration Assistant
5 Steps In Depth:
1. Back up your Mac:
Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the transfer.
2. Erase your Disk
- Boot: into Recovery Mode
- Go to: Disk Utility
- Erase: the hard drive
3. Install High Sierra:
Create and use a High Sierra USB Bootable Installer. Use a USB Flash Drive of 16GB to create it.
4. Upgrade to Catalina:
Go Here: How to Upgrade to macOS Catalina - Apple Support
5. Migrate and Reinstall Data and Apps:
Next migrate it over from the Time Machine Backup you created in Step 1.
Note: Some of your apps may not work with macOS Catalina, if they are not 64-bit. If something does not run in the new install, request from the developers new keys for the software. Inform them that your Mac has crashed, and that they give you the installation files you need (Ask for 64-bit installers).
