On Wed, Feb 18, 2015 at 09:37:31AM +0000, A Y wrote:
> I used the following command under OpenBSD 5.6:
> 
> #dd if=/location/install56.fs of=/dev/rsd1c bs=1m
> 
> When I try to reformat it under Windows, it formats only 240 M. So is it
> possible to format is under OpenBSD so that I can get the full size (16G)
> back?

Zero out the MBR from OpenBSD.
# dd if=/dev/null of=/dev/rsd1c bs=512 count=1

Then format it from Windows.

> 
> > Date: Wed, 18 Feb 2015 11:17:31 +0200
> > Subject: Re: OpenBSD usb cannot be read on Windows
> > From: pr...@kivisoo.ee
> > To: afyous...@hotmail.com
> > CC: misc@openbsd.org
> >
> > > I used the "dd'' command to make a bootable USB drive. The USB is 16G.
> > > After I
> > > am done with the installation, I want to use the USB under Windows for
> > > other
> > > purposes. Windows reads only 240 M.
> > > How can I recover the 16G on the USB?
> > >
> > >
> > Reformat it.
> >
> > Priit

-- 

/ Raimo Niskanen, Erlang/OTP, Ericsson AB

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