Date: Sun, 18 Nov 2012 08:51:44 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Thomas Mueller <mueller23@insightbb.com> Cc: freebsd-questions@freebsd.org Subject: Re: dd command: BSD analog of conv=fsync? Message-ID: <20121118145144.GA45483@dan.emsphone.com> In-Reply-To: <40.75.25607.E78C8A05@smtp02.insight.synacor.com> References: <40.75.25607.E78C8A05@smtp02.insight.synacor.com>
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In the last episode (Nov 18), Thomas Mueller said: > What is the (Free)BSD counterpart of conv=fsync in dd command? > > Command in question is > > dd if=GNOME-3.6.0.iso of=/dev/DRIVE bs=8M conv=fsync > > This is for writing to a USB stick, and of course DRIVE is replaced by the > actual device node; also I believe bs=8M, good for Linux, would be bs=8m > in FreeBSD. > > I don't really know if "conv=fsync" is necessary, but that's what was > advised in the GNOME test-drive download page. It isn't. Writing to raw devices in FreeBSD immediately writes to the physical media. No flushing is needed. -- Dan Nelson dnelson@allantgroup.com
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