Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Missing free space on HDD


  • Please log in to reply
7 replies to this topic

#1 johndepere

johndepere

  • Members
  • 78 posts
  • OFFLINE
  •  
  • Local time:02:11 AM

Posted 22 September 2016 - 07:14 PM

Hello,

      I have recently aquired a used Western Digital SATA hard drive, model WD 32000aajs which is a 320 GB drive, however this disk only shows a total size of 298GB  when viewed with Windows disc managment tool or a live linux distro with Gparted.

 I thought maybe there was a recovery partition that was hidden so I downloaded a tool called EaseUS partition manager and it also shows just the 298 gb disk capacity and 10 MB unallocated space.

So my question is what am I doing wrong by not being able to locate the missing  22GB of data??

  Any help of suggestions would be appreciated!!  Thanks in advance for any help given.



BC AdBot (Login to Remove)

 


#2 JohnC_21

JohnC_21

  • Members
  • 24,657 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:02:11 AM

Posted 22 September 2016 - 07:28 PM

That is a normal size because the drive manufacturers are kind of cheating in advertising capacity. 1GB = 1024 X 1024 X 1024 bytes = 1073741824 bytes

 

The drive manufacture lists 1GB as 1000 X 1000 X 1000 = 1000000000 bytes

 

1000000000 / 1073741824 = .931  

 

320 GB X .931 =  298 GB

 

The larger the drive the larger the space discrepancy.

 

http://www.howtogeek.com/123268/windows-hard-drive-wrong-capacity/



#3 OldPhil

OldPhil

    Doppleganger


  • Members
  • 4,240 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Long Island New York
  • Local time:02:11 AM

Posted 22 September 2016 - 07:48 PM

Took a minute or two but dug up the truer spec's.  Scroll down to the section on "Firmware" the missing G's may be dedicated to WD's service Area.

 

http://datacent.com/datarecovery/hdd/western_digital/WD3200AAJS


Honesty & Integrity Above All!


#4 JohnC_21

JohnC_21

  • Members
  • 24,657 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:02:11 AM

Posted 22 September 2016 - 08:10 PM

As you can see from the hard drive calculator an advertised capacity of 320GB is seen in Windows as 298GB.

 

http://www.ussscctv.com/harddrivesizecapacitiescalculator.aspx



#5 johndepere

johndepere
  • Topic Starter

  • Members
  • 78 posts
  • OFFLINE
  •  
  • Local time:02:11 AM

Posted 22 September 2016 - 09:18 PM

Thanks for your reply and explanation JohnC.
I obviously didn't realize the stated vs actual size could be off that much.
Thanks again for your assistance!!!

#6 JohnC_21

JohnC_21

  • Members
  • 24,657 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:02:11 AM

Posted 22 September 2016 - 09:29 PM

No problem, glad I could help. 



#7 johndepere

johndepere
  • Topic Starter

  • Members
  • 78 posts
  • OFFLINE
  •  
  • Local time:02:11 AM

Posted 23 September 2016 - 08:20 AM

Thanks Oldphil, I have read the article you posted and it makes a little more sense to me know.
Also I just wanted to say thanks to this website and its contributers!!
Every time I have came here with stupid questions or problems I have been treated with nothing but goodwill and respect and have been amazed at the amount of time the folks on the site have taken to help me and others with issues.
Thanks for sharing your expertise !!!

#8 MadmanRB

MadmanRB

    Spoon!!!!


  • Members
  • 3,292 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:No time for that when there is evil afoot!
  • Local time:02:11 AM

Posted 23 September 2016 - 09:01 PM

Yeah its a practice that most hard drive manufacturers do.

Now dont get me wrong there is some justification in the numbers as some of the space is reserved for allocation for the file system rather that be for windows, osx, unix like os's like linux or BSD.

But yeah the numbers are never what they say on the box.


You know you want me baby!

Proud Linux user and dual booter.

Proud Vivaldi user.

 

xu847p-6.png





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users