We help IT Professionals succeed at work.

USB Mass Storage Device shows less memmory that expected - Why?

emroze
emroze asked
on
Medium Priority
354 Views
Last Modified: 2013-11-14
Hello All,

I bought a kingston 16 GB usb disk drive. Its also referred to as thumb drive, data traveler, usb disk etc.

So it says 16GB on it, but when I try to look at the properties, it says 15GB. However numerically it shows more than 16GB.

Please see the attached image so you know what I am saying.

Why is it so? And how can I make the usable space 16GB?

I know some discs save some area for information storage and what not. But 1 whole GIG difference?

Thanks in advance.

AJ
disk.jpg
Comment
Watch Question

Manufacturers of hard discs and DVD-blank discs use the SI-Prefix compliant to indicate the capacity of their Items. This leads to the problem that a DVD discs which is indicated with 4,7 GB is identified by the operating system with the fomal different data of 4,38 GiB. The same happens to 500 GB hard discs which are idintified as 466 GiB.
USB-capacity.JPG
in simple words:
manufactures market capacity based on powers of ten, with 1KB equalling 1,000 bytes.
whereas all operating systems are based on 1KB equalling 1,024 bytes.

so 16 billion bytes in your case comes to 15 GB.

Not the solution you were looking for? Getting a personalized solution is easy.

Ask the Experts
Access more of Experts Exchange with a free account
Thanks for using Experts Exchange.

Create a free account to continue.

Limited access with a free account allows you to:

  • View three pieces of content (articles, solutions, posts, and videos)
  • Ask the experts questions (counted toward content limit)
  • Customize your dashboard and profile

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

OR

Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.