fdisk(8) on FreeBSD
The text b1a95bece05d, as FreeBSD 5.1-RELEASE, FreeBSD 5.0-RELEASE shipped it.
PC slice table maintenance utility
Flags it lists
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-1234 -
-B -
-I -
-a -
-b -
-f -
-i -
-s -
-t -
-u -
-v