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Windows 7: HDD's - the Advertized size vs the Actual size.

14 Nov 2010   #111

Windows 7 Fire x32

I already knew this but I'm going to link it to some friends that don't know

My System SpecsSystem Spec
19 Dec 2010   #112

Windows 7 Ultimate x86

Well, I didn't lose a lot when I got a 250 GB laptop HDD, did I? :P
My System SpecsSystem Spec
25 Dec 2010   #113

Windows vista home premium and Windows 7RC1

I am sorry to bump this, but SquonkSC you should pay more attention if you write such guides. You keep mixing GB with Gb and TB with Tb! This is not very right, because you confuse bytes with bits this way. And you cannot say that it does not matter, because it always means bytes! See some articles about new hard drives or memory card technology and you will notice they always declare data density in Gb (Gigabits) per inch. Just a friendly but important notice IMO...
My System SpecsSystem Spec

26 Feb 2011   #114

Windows 7

So according to the first post, a harddisk with an advertized size of 640 GB would have an actual size of 596 GB, right?

I'm asking because my Acer laptop had 556 GB from the beginning, despite having an advertized size of 640 GB.
My System SpecsSystem Spec
26 Feb 2011   #115

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2

Jay10, there's probably a hidden partition with stuff needed for the Acer Restore business that uses the rest. Look in Disk Management and see if you can spot it there.
My System SpecsSystem Spec
13 Mar 2011   #116
Microsoft MVP

Windows 7 Ultimate X64 SP1

Quote   Quote: Originally Posted by fseal View Post
Some is file system overhead, the rest was all lies
You have a very accurate hammer!!
My System SpecsSystem Spec
13 Mar 2011   #117
Microsoft MVP

Windows 7 Ultimate X64 SP1
Confusin' ain't it?

A little primer for you novices who may not know, I'm not meaning to belittle anyone. Just explainin'. This took me some time to understand too.

Computers understand the binary number system, only two numbers, 0 or 1. All data on your computer is in bits, a 0 (zero) or 1 (one), or on or off. A bit is represented by the lower-case "b".

Eight bits= 1 Byte, or character and is represented by the upper-case "B". As you double this over and over, 2,4,8,16,32,64,'ll get to 1024, which is 1KB to the computer. This means K, kilo, 1024 Bytes. Continue the doubling and you get to 1,048,576 which is a binary Mega Byte, MB.
1024KB=1 MB, 1 million binary bytes or Megabyte, 1024MB=1GB, or Gigabyte, one billionbinary bytes, 1024 Gigabytes=1TB, 1 Trillion binary bytes or terabyte.

HDD makers use the metric system to describe drive sizes:
KB= 1,000 bytes
MB=1,000,000 (million) bytes
GB=1,000,000,000 (billion)bytes
TB=1,000,000,000,000 (trillion) bytes

When you buy, say, a 500GB drive it in fact has 500 billion bytes, but counted in the metric system. In the binary system, which you computer reports, it is shown as about 465.661 GB. No one is "cheated" per se, but speaking different languages, binary and metric. It is misleading however if you don't understand why your shiny new 500GB drive says it's only 465GB.

It seems RAM, your memory, is sold with binary designations. That is, 1GB of RAM is in fact 1,073,741,824 bytes and not 1,000,000,000 bytes.

Hope this helps out.
My System SpecsSystem Spec
22 Apr 2011   #118

Windows 7 Ultimate x64

My new Seagate Barracuda LP 2TB (model number ST32000542AS) is being formatted right now, the final formatted capacity will be 1863.01GB (per Disk Management).

On the bright side, Windows 7 x64 Ultimate saw the drive perfectly and installed the necessary drivers (no fuss, no muss)
My System SpecsSystem Spec
06 May 2012   #119

win7 ultimate 64bit

hello guys,

info query..

i am owning an i5 500G laptop...
my problem: usable space is only 407G ...

by looking on the disk management, 50G is FAT32... the 407G i said above is NTFS...

what happen to the 43G?? (i do know i cannot fully utilize the 500G as what stated above)...

can i reduce the 50G FAT32?
My System SpecsSystem Spec
06 May 2012   #120

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit

The formatted capacity of a 500 GB drive is about 465 GB.

What is on the 50 GB FAT 32 partition? Why do you have it? Is this a second hand computer? Most partitions on most PCs are NTFS.

Post a picture of what you are seeing in Disk Management.
My System SpecsSystem Spec

 HDD's - the Advertized size vs the Actual size.

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