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Paper Tape
Posts: 1
Registered: ‎04-24-2009
Location: USA
Views: 657
Message 1 of 2

Smaller HD capacity??




I recently bought Y530 with 4GB RAM 320GB HD with Vista on it. However when I look into explorer or control panel's Computer managemnt utility, I see only 270GB of HD space. I am wondering where did the promised 320GB HD onthis system?


Am I missing anything? I bought lenovo for first time. Can anyone shed somelight on this? Where can I see if the HD really has 320GB?


Thanks for reply

Retired Guru
Posts: 1,406
Registered: ‎10-26-2008
Location: California, United States
Views: 647
Message 2 of 2

Re: Smaller HD capacity??

The rule is....


Hard drive manufacturers label 1GB as 1,000,000,000 Bytes.

Operating systems read 1GB as 1,073,741,824 Bytes, or 1024x1024x1024 [1024 to the 3rd power]


Thus a 320GB hard drive would be labeled as 320,000,000,000 Bytes by the hard drive manufacturer. In operating systems, 320,000,000,000 Bytes would be a little over 298GB.


In general, you the specified hard drive size by .93125  and the result is what would be visible and usable to the operating system.


500GB x .93125 = 465.63GB

320GB x .93125 = 298.00GB

250GB x .93125 = 232.81GB

160GB x .93125 = 149.00GB


It's not an exact number, but more or less what it should be. Just remember, you are not being ripped off, it's just the way it is.

Message Edited by ortegaluis on 04-24-2009 03:48 PM

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