Date: Thu, 10 Dec 2009 03:12:45 +0100 From: Polytropon <freebsd@edvax.de> To: Maxim Khitrov <mkhitrov@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Dangerously Dedicated Message-ID: <20091210031245.3fd58187.freebsd@edvax.de> In-Reply-To: <26ddd1750912091741g60fb428ape15225c12e9d8c8b@mail.gmail.com> References: <20091209002231.EB7D01065741@hub.freebsd.org> <675083.74248.qm@web65510.mail.ac4.yahoo.com> <20091210012256.7d2e8240@gumby.homeunix.com> <4B204FDD.3070005@lazlarlyricon.com> <26ddd1750912091741g60fb428ape15225c12e9d8c8b@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 9 Dec 2009 20:41:40 -0500, Maxim Khitrov <mkhitrov@gmail.com> wrote: > On Wed, Dec 9, 2009 at 8:33 PM, Rolf Nielsen > <listreader@lazlarlyricon.com> wrote: > > As far as I understand it, it's called Dangerously Dedicated because it may > > cause other systems not to recognise the disk. Consequently, newfs'ing a > > slice without first partitioning it can hardly be DD, since that is what > > other systems do, right? > > That is correct. That slice will not be bootable, but you can use it > to store data. Being bootable is a matter of what the MBR boot block says. In a DD setting, it refers to the first partition (that's not within a slice), e. g. ad0a. Especially in a multi-OS setting, the use of slices seems to be strongly recommended so all operating systems behave in the required way (due to compatibility reasons, see "DOS primary partitions"), which limits the number of slices to 4. For plain storage, it's not needed to encapsulate the partition with the file system inside a slice, e. g. ad1 ad1s1 ad1s1e { [ (/data) ] } in comparison to ad1 ad1c { (/data) } And as it is known, the "c" can be omitted, as in # mount /dev/ad1 /data -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20091210031245.3fd58187.freebsd>