Mojave boot drive gone from Clover after install.

Dell T3500, after having High Sierra running fairly happily, I tried a native Mojave update from within App Store, and after the install reboots, the drive has now disappeared from Clover. I never saw the Mojave GUI, other than maybe a grey screen and a cursor, now it's gone. I've tried shuffling APFS drivers but that seems not to be the problem. Anyone else familiar with the issue? Appreciate the help!

submitted by /u/conroe_au
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