Date: Thu, 28 Mar 2013 04:27:43 -0400 From: Quartz <quartz@sneakertech.com> To: "Ronald F. Guilmette" <rfg@tristatelogic.com> Cc: freebsd-questions@freebsd.org Subject: Re: Copying memstick image to a USB (flash/thumb) drive Message-ID: <5153FEFF.4090305@sneakertech.com> In-Reply-To: <14008.1364453112@server1.tristatelogic.com> References: <14008.1364453112@server1.tristatelogic.com>
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> I have filed the following PR: > > http://www.freebsd.org/cgi/query-pr.cgi?pr=177431 Er, don't take my word for law: I have *no* idea if 1M is a good idea for most systems, I'm not even sure if it's optimal for mine. I did a single test with three random values at different orders of magnitude and picked the fastest. I do think that 10k is probably way under the right value, but someone should do proper testing on a variety of hardware before changing all the docs. As for the conv=sync option, I'm not convinced it's necessary either way. I've dd'd zillions of images to various media over the years and have never specified a conv parameter and I've never had problems. I don't think modern systems really care what the end is padded with (provided nothing is corrupt of course). Someone with more experience would need to chime in on this. ______________________________________ it has a certain smooth-brained appeal
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