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Re: Large hard disk confusion



On Sun, 2005-02-06 at 10:44 +0100, Marcus Lundblad wrote:
> 
> On Sun, 6 Feb 2005, Brian Clark wrote:
> 
> > I just installed sarge on a 160 GB hard disk. Partitions are 2GB swap,
> > 50 MB /boot, and the rest for /.
> >
> > ~$ df -ahT
> > Filesystem    Type    Size  Used Avail Use% Mounted on
> > /dev/hda3     ext3    145G  230M  138G   1% /
> > proc          proc       0     0     0   -  /proc
> > devpts      devpts       0     0     0   -  /dev/pts
> > tmpfs        tmpfs    443M     0  443M   0% /dev/shm
> > /dev/hda1     ext3     45M  9.3M   33M  23% /boot
> > usbfs        usbfs       0     0     0   -  /proc/bus/usb
> >
> > My question is, why is hda3 only showing as 145 GB? Surely ext3 isn't
> > taking up gigabytes worth of journal information?
> 
> I think it's common that "160 GB" means 160000000000 bytes when 
> manufactures defines harddrive space.
> And 160 "real" GB is 201997680640

160 GiB = 171,798,691,840
160 GB  = 160,000,000,000

If OP would read the fine print on his hard drive, he would see
that the manufacturer clearly specifies that GB == 1,000,000,000,
i.e. 10^9, *not* 2^30.

http://physics.nist.gov/cuu/Units/binary.html

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Ron Johnson, Jr.
Jefferson, LA USA
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