http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man8/bioctl.8?query=bioctl&arch=i386 says

"CAVEATS

Only devices with 512-byte sectors are supported."


Is any update upcoming?

While it's 512-byte only, what does that mean for write wear amplification and access speeds on SSD:s with 4KB or 16KB?

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