Mac Book Pro 16 inch 2019 - no boot
A couple of users have reported not being able to get past the following boot error:
ACPI Error: AE_ALREADY_EXISTS
It ends up the same in both cases:
ERROR: Unable to locate IOAPIC for GSI 34
Couldn't get size: 0x8000000000000015
MODSIGN: Couldn't get UEFI db list
Couldn't get size: 0x8000000000000015
Edited by numbat