Thanks @deeveedee it also solved my FileVault problem I mentioned in the Sequoia thread.I got myself into a little mess with FileVault enabled in Tahoe Beta 2 on my HackMini8,1. FileVault would not accept my password. I booted into Tahoe Beta Recovery, but was unable to unlock and decrypt through "normal" mechanisms. I was able unlock and decrypt by booting into Tahoe Recovery as follows:
The encrypted volume should start to decrypt. Monitor decryption progress with 'diskutil apfs list'
- Boot Tahoe Beta 2 Recovery
- Select Tahoe Beta Volume to recover
- Open Utilities > Terminal
- execute 'diskutil apfs listUsers [Tahoe Beta Volume] to view user UUIDs and note the UUID for 'Local Open Directory User' (where Tahoe Beta Volume is /dev/diskXsY)
- execute 'diskutil apfs decryptVolume [Tahoe Beta Volume] -user [UUID noted in step 4]
- when prompted for password, enter your user password for your Tahoe Beta Volume
After decryption is complete ('diskutil apfs list' reports FileVault 'No' for your Tahoe Beta Volume), reboot. You should now be able to boot and login to your Tahoe Beta Volume without FileVault.
Using your steps, I could decrypt both of my MBP11,2 volumes.