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Hi, let's say I start with a disk that has a GPT with two partitions. Is there an easy/simple way for me to use sfdisk to generate and write a nested hybrid/protective mbr table that is in sync with the GPT one? Basically I'm looking for something like
sfdisk --label-nested mbr --sync-to-gpt /dev/sda
or
sfdisk --label gpt --dump-for-hybrid /dev/sda > for_hybrid.txt cat for_hybrid.txt | sfdisk --label-nested mbr /dev/sda
other tools I'm aware of that can do a similar thing are gptsync1 and gdisk's h option2. Maybe the only slightly weird thing going on here is gpt --> mbr partition type mapping.
h
Cheers!
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You can force sfdisk to work with nested protective MBR and define MBR partitions manually. sfdisk will not do any calculation from GPT to MBR, because it's impossible in a reliable way.
impossible in a reliable way
Yeah, an option like --label gpt --dump-for-hybrid would have to be "best effort"
--label gpt --dump-for-hybrid