- I would first suggest doing Reset NVRAM.
- If problem persists, do cold boot.
- If problem persists, open BIOS Setup --> Boot and select the disk containing OpenCore as Priority #1. Then "Save & Exit" from BIOS.
- If problem persists, try booting one of the macOS volumes anyway to see if it works.
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- If problem persists, please let us know.
first I cleared CMOS and made the appropriate BIOS settings according to post 1.
reset NVRAM--same symptom.
cold boot--same symptom.
verified boot from the SSD containing OC, also booted from USB stick which contains the designare OC that I placed on the usb stick a couple of weeks ago and verified working. neither SSD nor USB EFI changed the symptom.
tried booting from both the --Data volumes, received security error messages.
then for fun, I tried a USB stick containing clover 5144, which was prepared for a different hack. interestingly, the boot choices were not --Data but instead "Boot Mac OS from Office Big Sur via Preboot" and corresponding entry for the "Catalina" drive. not sure if this is helpful.
I also tried removing one of the SSD's and installing it into an external USB m.2 enclosure. booting from OC, it shows as an external drive, but still listed as Big Sur--Data.
UPDATE: I dug up my bootable backup drive. when plugged it into a designare USB port and booted with the EFI folder that is on one of the SSD's (same as I have been using all along), the USB backup drive shows up properly as a boot choice (no --Data appended to the drive name) and it boots to the desktop properly.
both the SSD's point to the home folder on a separate HD, so the SSD's just contain the system. it will not be a big issue to format the SSD's and reinstall both systems (Big Sur and Monterey--despite the name Catalina on the drive--I just failed to change the drive name when I replace Catalina with Monterey last week).