Question Harddisk not showing full capacity

Oct 13, 2021
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I have a 3tb HDD but after cleaning it in Diskpart it only shows 2794,50gb so 2.8tb but stilles leaves some remaining ?
if i look under properties it does say that 238gb is being used but when i use diskpart i only says that the disk size is 2794,50gb

What to do ?
 

USAFRet

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I have a 3tb HDD but after cleaning it in Diskpart it only shows 2794,50gb so 2.8tb but stilles leaves some remaining ?
if i look under properties it does say that 238gb is being used but when i use diskpart i only says that the disk size is 2794,50gb

What to do ?
That is exactly what Windows will report.

Base 10 vs Base 2
Human vs computer
1000 vs 1024

A handy calculator
https://wintelguy.com/gb2gib.html


You've not lost any space, nothing is missing, it is not a result of "formatting"
Just a difference in units.
 

Pimpom

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May 11, 2008
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This must be one of the most common complaints I see on online shop feedbacks. Manufacturers of storage media state capacity in decimal numbers whereas computers show them in binary.

A 3TB HDD has 3,000,000,000,000 bytes.
To state that in Kilobytes, divide it by 1024 and you get 2,929,687,500 KB
Dividing by 1024 gives you about 2,861,023 MB
Take it one more step and you get 2794 GB
That's 2.738 TB - an apparent loss of more than a quarter of a TB.

To make matters worse, memory cards and USB flash drives (thumb drives) use up still more space for internal management. That extra used space differs with the model and manufacturer. So, while a 500GB HDD has about 465GB of usable space, a 500GB thumb drive will provide only about 450GB.

This often evokes cries of Counterfeit! Used product! and scathing condemnation of the seller. :)
 
Last edited:
Oct 13, 2021
3
0
10
0
This must be one of the most common complaints I see on online shop feedbacks. Manufacturers of storage media state capacity in decimal numbers whereas computers show them in binary.

A 3TB HDD has 3,000,000,000,000 bytes.
To state that in Kilobytes, divide it by 1024 and you get 2,929,687,500 KB
Dividing by 1024 gives you about 2,861,023 MB
Take it one more step and you get 2794 GB
That's 2.738 TB - an apparent loss of more than a quarter of a TB.

To make matters worse, memory cards and USB flash drives (thumb drives) use up still more space for internal management. That extra used space differs with the model and manufacturer. So, while a 500GB HDD has about 465GB of usable space, a 500GB thumb drive will provide only about 450GB.

This often evokes cries of Counterfeit! Used product! and scathing condemnation of the seller. :)

Horrible haha, but nice to know the math when somone complains
 

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