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zfsboot: to detect disk size, use GPT information first

Description

zfsboot: to detect disk size, use GPT information first

If we do have GPT on disk, read the disk size from it and do not
call int13.

Since int13 does report bogus informatiopn too often, rather trust the
partition table. We are using the same strategy with loader.

MFC after: 1 month

Details

Committed
tsoomeApr 30 2019, 5:45 PM
Parents
rS346968: Update the manpage text to show the output generated by the first-stage
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