Date: Sat, 16 Nov 2013 16:08:15 +1030 From: Shane Ambler <FreeBSD@ShaneWare.Biz> To: Warren Block <wblock@wonkity.com>, aurfalien <aurfalien@gmail.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: gpart, to -a 4k or to -b 1M Message-ID: <528704C7.9050103@ShaneWare.Biz> In-Reply-To: <alpine.BSF.2.00.1311151712370.36506@wonkity.com> References: <A0427786-1BF3-47CB-9924-7B568BA5A950@gmail.com> <alpine.BSF.2.00.1311151712370.36506@wonkity.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 16/11/2013 10:46, Warren Block wrote: > On Fri, 15 Nov 2013, aurfalien wrote: > >> Hi, >> >> Curious, for best practice in ensuring 4K alignment, should one do; >> >> gpart add ... -b 1M >> >> or >> >> gpart add ... -a 4k >> >> Thank in advance, > > They do different things. '-b 1M' starts the added partition at 1M but > does not force it to be a multiple of 4K in size. > > '-a 4k' forces the added partition to start at the next 4K-aligned > block, and forces the size to be a multiple of 4K. > > I recommend both for the first filesystem partition, and '-a 4k' for > later ones. I believe it was related to windows co-existence but I heard a while back that -a 1M is a good option to use.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?528704C7.9050103>