Missing Hard Disk Space

[sdrone]

Hello There,

I have an external harddisk of 1TB... (931GB usable) space
it shows that it has 75 GB space left (in hard drive properties)...
but when i check by myself i can only add upto 783GB..
so where is the remaining harddisk space (i.e. ~73GB)

Please Help..

 

[CountMike]

Try with a program like this: http://www.diskboss.com/downloads.html to find out where is that "missing" space.