How to Deal With I Can't Upgrade MacBook to macOS Monterey with SSD?

macos tips
1

My original Apple SSD in MacBook Pro failed to upgrade to macOS Monterey:

(1) I tried OpenCore Legacy Patcher: This tool reportedly enables Monterey installation on unsupported Macs. Does it update firmware in a way that would still require an Apple SSD, or does it circumvent that requirement entirely?

(2) I also tried Thunderbolt Target Disk Method: Some claim Monterey could be installed on a third-party SSD by connecting the Mac via Thunderbolt to another Mac with an Apple SSD, booting in Target Disk Mode, and directing the installer to the third-party drive. If this works, I’d need a Thunderbolt 3-to-2 adapter/cable compatible with a 2015 MacBook Pro.

Are these approaches realistic for bypassing the Apple SSD restriction?

2

How about fixing the issue here: Mac Won’t Upgrade to macOS Monterey, How to Fix?

Maybe you can use Mac Safe Mode or macOS Recovery Mode to do the process again.

3

For bypassing the complex commands and long macOS version downloading, you can try iBoysoft DiskGeeker for Mac.

It can directly download macOS Monterey DMG files smoothly and quickly on your Mac’s internal or external drive. Besides, it allows you to create a bootable installer without the difficult command lines. Just a few clicks, you can finally upgrade ~

For downloading macOS DMG to your SSD drive:

  1. Free download and open iBoysoft DiskGeeker for Mac.
  2. Connect your drive to Mac.
  3. Select the drive and click Create boot disk on the right.
  4. Click Get near the macOS Monterey.
  5. Select your SSD as the location.
  6. Wait for the downloading.

Easy, please have a try.