2015-10-07 1:07 GMT+08:00 Theo de Raadt <dera...@cvs.openbsd.org>: > > > Have I (and some others) misunderstood anything about how BSD > disklabelling > > > works? > > > > the disklabel is the second sector of the openbsd part of the disk. > > > > *3: A6 0 1 2 - 243200 254 63 [ 64: 3907024001 ] > OpenBSD > > > > so, if you overwrite sector 65, you will overwrite disklabel. normally > the 'a' > > partition overlaps the disklabel, but you made 'e' first. > > The ffs and swap code knows not to touch the first 8K of the disk, for > historic reasons, and this has saved many a butt. I suspect softraid > also does this. > > But your fingers don't know it. > > Right, time for fingers to learn.
Will look forward to learn how it "saved many a butt" and what's the lowest "safe" offset (..64 + 8*2 = 81+?..) (if that will actually make sense when understanding the whole thing) through the Q:s in my last post? Very interesting; thanks!
