- Nov 11, 2018
- Gigabyte Designare Z390
- RX 580
- Classic Mac
- Mobile Phone
Do you know why I keep harping about creating bootable backups on cheap 256GB or 512GB SSDs mounted in even cheaper USB 3.0 external SSD enclosures? I issue this warning every time there is an O/S update. But you're in enough stress already, so I should watch what I say!I toasted my bootloader, and my new bootloader isn’t getting me to the OS. Super awesome is also the fact the bootloader backup is in time machine, which I can’t access
But let this be a lesson to everyone who has still not decided that they should spend a few dollars and a few minutes of their time to create and periodically update their bootable backup.
Okay, let's try to recover your system in a methodical way. I believe I actually encountered the same problem when I installed 10.14.5 onto a spare SSD and tried to see what would happen by deleting WhateverGreen. The computer would go through the startup sequence, but then the RX580 would terminate its video output, leading to a black screen. Unfortunately, this might have caused some unexpected collateral damage because restoring WhateverGreen did not fix the problem. In fact, I tried various alternatives including a new USB boot loader, but I could simply not overcome the RX580 black screen. The OS itself or a key preferences file might have been corrupted.I’m losing it at the point in the boot process where the Apple logo typically comes, right at the end. It’s loading, then the display shuts off. It doesn’t reboot, it just loses signal. My assumption is GPU related. I’ve never had trouble with this since moving to AMD GPU’s. In this case the RX580.
Fortunately, this was on a spare SSD so I simply reinstalled macOS 10.14.5 with WhateverGreen (i.e. followed my own guide strictly) and the system booted up perfectly fine.
Did you remove WhateverGreen at any time?
Does your problem sound similar to what I described?
If so, I don't think it makes sense to spend any time trying to identify the root cause. Instead, it would be better to follow a full system recovery procedure instead.
Option 1: Restore from Time Machine
- You should be able to boot into Recovery. Don't use the USB for this. Boot directly with the Mojave SSD and choose the Recovery option at Clover Boot Menu. You should not get a black screen.
- When the Recovery system starts, you will have an option to restore from Time Machine.
- Try that option.
- Install 10.14.5 onto a new or spare SSD. You can easily use a low-cost USB 3.0 external SSD enclosure and a 256GB SSD.
- Follow all steps of the build guide, but DO NOT LOG INTO iCLOUD at ANY time.
- When macOS asks you to create a login ID and password, use a different password than the old Mojave SSD.
- Boot from the new spare SSD and login to your fresh copy of Mojave.
- Now mount the EFI partition of the old Mojave SSD and copy your config.plist to the EFI partition of the new USB SSD. This will transfer your serial numbers to the new USB SSD.
- Reboot from the USB SSD.
- You can log in to iCloud now.
- Use Migration Assistant to transfer your files and apps to the new USB SSD.
- Reboot and use the USB SSD for a few days to make sure everything is okay and all your apps are working fine.
- Yes, for a few days.
- Fully back up the old Mojave SSD.
- Once you're convinced that everything from the old Mojave SSD has been transferred, then you can use Carbon Copy Cloner to clone the USB SSD to the old Mojave SSD.
- Then remove the USB SSD and boot directly from the Mojave SSD.