Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Hard Drive - why is 2 TB only 1.8 TB ??

23 Dec 2010   #21
mjf

Windows 7x64 Home Premium SP1
 
 
What can be confusing.

Once you know decimal/binary difference for storage device labelling you just accept that's the way it is.

The confusion is more annoying when a technical reference is made to a device capacity.
eg. My BIOS can treat USB devices as "floppies" if less than 2GB and "HDD" if greater than 2GB.
Is it GB binary/technical notation or GB decimal/marketing notation?

The "Ripp off" complaint isn't an issue. Technical consistency can be annoying.


My System SpecsSystem Spec
.
23 Dec 2010   #22
Buddahfan

Windows 7 Home Premium 64bit
 
 

Some of the discrepancy I believe has to do with with NTFS and how it locates or places files within a sector. Techies could either confirm or rebut this

Also, hard drives come with some amount of built in "firmware" that uses a certain amount of the drive reducing the amount of space available to the user.

In addition drives that come from the manufacturer may have a a factory installed "Recovery" feature which allows the user to reinstall the system at any time just at it came from the manufacturer. This is especially true on Netbooks and the like which do not come with a built in CD/DVD drive.

Then sometimes there are programs that come pre-installed from the manufacturer that use hard drive space but whose files are hidden and locked.

I know that hard drive and defragmenting technology have advanced significantly from when I worked for hard drive manufacturers years ago, but it used to be a rule of thumb that one should not use more than 60% - 70% of the available hard drive space that was available on the hard drive at the time that the computer or hard drive was purchased. The reason for this is because it used to be that if your hard drive was too full i.e. over say 65% of original user available capacity that defragging the hard drive would slow down exponentially as your usage of the available hard drive space exceeded 65% or thereabouts.

I would think that that may have changed but I still go by this rule of thumb. Actually I don't like to use more than than 50% of original available hard drive space. Hard drives are plenty cheap today so I like to leave lots of room on my hard drives just out of habit

Finally the way that hard drives used to handle read write routines affected the speed of writing and reading a drive depending on how much of the hard drive was being used. Since hard drives use mechanical parts as opposed to SSD drives the farther that the read write heads have to travel on the drive and the more that they have to travel due to excessive fragmenting the slower your read and write speeds would be on the hard drive.
My System SpecsSystem Spec
23 Dec 2010   #23
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

It is unbelievable how much discussion there can be about a simple mathematical conversion from decimal to binary. But it is interesting to see which theories are being forwarded - all wrong of course - LOL.

Reminds me the guy who came first time to Germany, rented a car at the airport and was wondering why he was going so slowly at 100 on the Autobahn. He did not realize that he was going 100kmh and not 100mph.
My System SpecsSystem Spec
.

23 Dec 2010   #24
Buddahfan

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by whs View Post
It is unbelievable how much discussion there can be about a simple mathematical conversion from decimal to binary. But it is interesting to see which theories are being forwarded - all wrong of course - LOL.

Reminds me the guy who came first time to Germany, rented a car at the airport and was wondering why he was going so slowly at 100 on the Autobahn. He did not realize that he was going 100kmh and not 100mph.
I definitely know that my entire theory was correct years ago with regard to the read/write heads movement, file placement on the hard drive and fragmented files and that parts of my theory if not all if are true today, straight up for a fact

If you would care to dispute my points one by one be my guess and lets have it.
My System SpecsSystem Spec
23 Dec 2010   #25
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by Buddahfan View Post
Quote   Quote: Originally Posted by whs View Post
It is unbelievable how much discussion there can be about a simple mathematical conversion from decimal to binary. But it is interesting to see which theories are being forwarded - all wrong of course - LOL.

Reminds me the guy who came first time to Germany, rented a car at the airport and was wondering why he was going so slowly at 100 on the Autobahn. He did not realize that he was going 100kmh and not 100mph.
I definitely know that my entire theory was correct years ago with regard to the read/write heads movement, file placement on the hard drive and fragmented files and that parts of my theory if not all if are true today, straight up for a fact

If you would care to dispute my points one by one be my guess and lets have it.
That drive was completely empty.
My System SpecsSystem Spec
23 Dec 2010   #26
Buddahfan

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by whs View Post
Quote   Quote: Originally Posted by Buddahfan View Post
Quote   Quote: Originally Posted by whs View Post
It is unbelievable how much discussion there can be about a simple mathematical conversion from decimal to binary. But it is interesting to see which theories are being forwarded - all wrong of course - LOL.

Reminds me the guy who came first time to Germany, rented a car at the airport and was wondering why he was going so slowly at 100 on the Autobahn. He did not realize that he was going 100kmh and not 100mph.
I definitely know that my entire theory was correct years ago with regard to the read/write heads movement, file placement on the hard drive and fragmented files and that parts of my theory if not all if are true today, straight up for a fact

If you would care to dispute my points one by one be my guess and lets have it.
That drive was completely empty.
It is never completely empty even after formatting.

There should be a some firmware or software on a protected section of the drive that you can not see. That stuff is placed there by the hard drive manufacturer to do what it does to make the drive work. This is besides a protected section of the drive that is used to store the factory system recovery software and settings that may be placed there by the hard drive manufacturer. Even without the latter you will always have the former even if you can't see it. If it wasn't there your hard drive could not work.
My System SpecsSystem Spec
23 Dec 2010   #27
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote:
There should be a some firmware or software on a protected section of the drive that you can not see
20 Gigabytes worth?
My System SpecsSystem Spec
23 Dec 2010   #28
Buddahfan

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by whs View Post
Quote:
There should be a some firmware or software on a protected section of the drive that you can not see
20 Gigabytes worth?
If you have a hard drive that is a a couple of yottabytes you might 20 Gigabytes worth
My System SpecsSystem Spec
23 Dec 2010   #29
Zepher

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by p5bdkw View Post
You need a calculator. Whenever I wanted to install a 50 Gb partition, I did the following math.

50 x 24 = 1200

50,000 + 1200 = 51,200

To create a 50 Gb partition, I used 51,208 to format.
No not 50,000, but 51200 or 51208.

The magic number being 24.

Drives sizes are so large these days that, I don't miss anything.
There's more than enough space for data, movies or music.
If not, I'll just buy another drive.

Like it was said earlier, if you think about it too long, you'll go mad.
It is what it is.
why don't you just do 50x1024? this way it is just 1 step.

Also, back in my Amiga days, the the formatted capacity of a drive on the Amiga gave more space than an MS-Dos formatted drive.
Floppies were 1.44MB on PC and 1.78MB on the Amiga (720K and 880K for DD disks)
My System SpecsSystem Spec
23 Dec 2010   #30
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by Buddahfan View Post
Quote   Quote: Originally Posted by whs View Post
Quote:
There should be a some firmware or software on a protected section of the drive that you can not see
20 Gigabytes worth?
If you have a hard drive that is a a couple of yottabytes you might 20 Gigabytes worth
Where is such a yottabyte drive on sale?
My System SpecsSystem Spec
Reply

 Hard Drive - why is 2 TB only 1.8 TB ??




Thread Tools




Similar help and support threads
Thread Forum
Cloning a hard drive partition onto a smaller hard drive
I have an old 320GB hard drive that's dying and slowing my computer down. The OS is on a 20GB partition. I want to copy that partition onto an empty, 110GB hard drive. Will the data copied be corrupted? am I better off re-installing windows? How can I do this?
General Discussion
hard drive failed, system image not found on hard drive
hi all, i hope someone can help me out, i am a newbie to all this so bare with me. my hard drive failed over a month ago but i managed to do a system image with win7 to my new 2tb internal hard drive. i cannot get the image recovery to work as i says "no image can be found on hard disk". i am at...
Backup and Restore
how to make your internal hard drive into and external hard drive ?
I have an internal hard disk not in use ,and I would like to make it as external disk ! I looked on the net and I found I should have the " encelsure " butt I think I wont find it here in my city . So is there another way ? like usb -esata cable ?
Hardware & Devices
Internal Hard Drive acting like an External Hard Drive
Hi guys, I'm new on any sort of forums so go easy if it's a stupid question..but here goes. Me and my brother built me a new computer from scratch (he did the building - i did the watching). To cut a long story short - I purchased an internal hard drive from Overclockers UK. It's a Samsung...
Hardware & Devices
How do I transfer files from bad sata hard drive to new hard drive
Hi. I have a virus infected sata hard drive with windows 7 on it. It has the win 7 anti virus 2012 on it, and it's a cybercriminal virus. I have lots of files I want to transfer to the new sata drive. I already have windows 7 installed on the new drive. How do I get the files from the bad drive to...
Installation & Setup
Computer Not Booting Hard Drive/Unresponsive Hard Drive
Hey guys, I have a HP Touchsmart IQ500. Turning my computer PC on today, all I got was a blue HP invent screen with setup, boot menu, system recovery, and system diagnosis, and I could not get past it. I entered the BIOS and figured out that the hard drive was listed as "not installed."...
Hardware & Devices


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 05:43.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App