Date: Thu, 20 Nov 2003 12:56:45 -0800 From: "Derrick Ryalls" <ryallsd@datasphereweb.com> To: "'Omer Faruk Sen'" <freebsd@faruk.net>, <freebsd-questions@freebsd.org> Subject: RE: 200gb hard drive? Message-ID: <A99A5AC30F74624388EE5F757BA58A20D7A04D@RED-MSG-50.redmond.corp.microsoft.com> In-Reply-To: <20031120202303.10773.qmail@fuzuli.enderunix.org>
next in thread | previous in thread | raw e-mail | index | archive | help
> I have installed a new hard drive to my FreeBSD system. Hard > drive is 200gb > but > when I fdisk and disklabel the output of "df -h" is something > like that: > > /dev/ad1s1e 183G 2.0K 169G 0% /disk2 > > Here as you can see I can only use 169GB of it. Bios has seen > my harddrive > as 190GB also dmesg output is like that: > > ad1: 190782MB <WDC WD2000JB-00DUA3> [387621/16/63] at > ata0-slave UDMA100 > > My question is what happened to 190-169 gb or maybe after > some filesystem > information reservation what happened to 183-169 gb? > > By the way I have used default newfs parameters -b 16384 -f > 2048. I don't > know if that helps... > When manufacturers talk about drive size, they use base 10. When computer report drive size, they use base 2. So, if you divide 200,000,000 bytes by ( 1024 * 1024 ), you get roughly 190gig in binary, so off the bat you lose 10gigs of space due to marketspeak translation. FreeBSD reserves 8% for something (I forget what), so that brings it down to 174gig. As for the last 5gig, dunno, sorry.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?A99A5AC30F74624388EE5F757BA58A20D7A04D>