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From: Quartz <quartz@sneakertech.com>
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Subject: Re: USB stick and some help with it. [SOLVED] The usb stick is in
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> GEOM writes it's metadata at the end of the
> block dev for many things which also conflicts with GPT.  This and other
> metadata conflict issues using either ufs or zfs based filesystems make
> gpart(8) not only the best tool, in many cases it's the only tool that
> can do it correctly short of a complete zeroing out of the block dev.

I mean..... I guess? It's not like it's hard to specify a seek parameter 
with dd and just nuke the last 1mb of the disk.