186.22gb not 200gb ?!?!?!?!?!?

  lindtchocdude1961 22:04 05 Sep 2003

.....a little confused, nay, annoyed.

Just taken proud possesion of my new dimension 8300, only to find the 200gb hardrive I thought I had bought is in fact only 186.22gb.?!?!

Given I have spent every last spare brass razoo
on as much hardrive capacity as I could afford,
my question is simple, am I confused? or do I have reason to be annoyed at my missing gb??

Regards L.

  powerless 22:10 05 Sep 2003

It is to do with the two standards of a kilobyte...

DieSee or Jazzypop will give you maths.

But basically 200GB is really (formatted) 186.22gb

I have two 120GB HDD and they format at 111GB each.

  Gaz 25 22:36 05 Sep 2003

Powerless is correct.

Windows uses part of this drive but it is not shown as useable space, becuase windows uses this area.

  woodchip 22:59 05 Sep 2003

It's the new way of robbing you they now call 1000Mb 1Gb. Which is not true its about 1024Mb

Its not just that Windows uses a bit of the drive, as this is a tiny partition of only about 8Mb or so for "essential" files. What really brings down the size of a drive is the way in which a Gigabyte is actually made up. I am sure someone will correct me, but I think that it is something like 1024 Mb = 1Gb therefore if you say 200,000Mb (200 Gb) divided by 1024 (the MB in a GB) you get 195. (I think) Anyhow, as above, one of the others can confirm or deny the maths, but it is something like that. What I do know for a fact is that this discrepancy is much more noticiable on larger drives and on a 200Gb it will be obvious.

No, you have not lost out and my SATA 160Gb is showing 160,031,014,912 Bytes which equates to 149Gb!!!!!

  Djohn 23:04 05 Sep 2003

Yep! both my new 80g drives show as 76.18g after a format and before any programs are installed. j.

  siouxah1 23:14 05 Sep 2003

As above,

Windows uses 1024 bytes to a megabyte, and hards disc manufacturers use 1000. Then a bit is lost during format. (That is a small amount and not a bit as in computer.)

  Ironman556 23:37 05 Sep 2003

One Way
1,000 bytes in 1 Kb

1,000 KB in 1 MB --> 1 MB = 1,000,000 bytes

1,000 MB in 1 GB --> 1 GB = 1,000,000,000 bytes

60 GB = 1,000,000,000 * 60 = 60,000,000,000 bytes


Binary Way

2^10 = 1024 bytes in 1 KB

So, 1 MB = 1024 * 1024 = 1024^2 = 1048576 bytes

So, 1 GB = 1024 *1024 * 1024 = 1024^3 = 1073741824 bytes

So 60 GB = 60 * 1073741824 = 64424509440 bytes


That gives a difference of 4424509440 bytes.

In binary that's 4424509440/1024^3 = 4.12 Gb "lost"!

Hope that makes sense, someone please correct me if my maths has gone wrong somewhere.

For a 200GB drive, multiply roughly by 3.3 (200/60) to find how much is "lost" ~ 14GB which is about right according to your ficures.

My new computer has a 160gb hard disc but only shows 146gb so dont worry it is a legitamate fiddle.

  Cybermaxx 16:26 06 Sep 2003

My HD has been factory partitioned into three volumes, namely 27.6, 24.8 and 3.37 GB. Total space is therefore 55.77 GB. The packaging states that this PC has a 60GB HD.

  bremner 16:34 06 Sep 2003

If you right click on your drive in My Computer then choose properties you will see in the box displayed the total capacity in bytes.

On mine it shows 60,019,835,932 hence 60GigaBytes

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