MFC r292057:
Make detection of GPT a bit more reliable. When we are detecting a partition table and didn't find PMBR, try to read backup GPT header from the last sector and if it is correct, assume that we have GPT. Differential Revision: https://reviews.freebsd.org/D4282
MFC r292058:
Remove a note about damaged PMBR. Now GPT will be detected automatically with such corruption.
Relnotes: yes