200gb hard drive?

Jason jason at ec.rr.com
Thu Nov 20 12:50:19 PST 2003

Omer Faruk Sen wrote:

> Hi
> 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...
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Wd uses an old system to measure drive capicity.  For a wd drive 200gb= 
200,000,000,000 bytes, but to any person fimilar with binary and decimal 
numbers there 200gb=186.26gb~2^37.54bytes.  You also have to have a file 
system, with takes up more room with more space to map.

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