If you have purchased a PC with a hard disk capacity of 500 GB and opened Windows Explorer and found that it is 440 GB. You would be wondering where rest of the gigabytes went. This can be attributed to several reasons like wrong amount of space, ranging from invisible shadow files, hidden recovery partitions, overhead formatting to deceptive storage capacities.
As far as hard drives, USB flash drives and other storage devices are concerned you might have noticed that they have less space after formatting. The hard drive manufacturers advertise devices against the way Windows computers uses them. One KB is 1000 bytes, one MB is 1000 and one GB is 1000 MB as per hard disk manufacturers are concerned.
RAM manufacturers do not sell in even groups of 1000 as they use groups of 1024. When memory is purchased an MB is 1024 KB, a KB is 1024 bytes and a GB is 1024 MB. Windows has calculated hard drives as powers of 1024 and manufacturers of hard drive use powers of 1000.
So there is a difference of about 35 GB against what the average buyer is led to believe it contains. If hard disks be advertised as per space they contained when connected them to Windows computer, 1 TB hard drive would be labeled as 931 GB hard drive. Windows could update User Interface to use proper definition of gigabyte.
Right-click your C: drive in Windows, one gets to see a certain amount of space as “Used Space”. If all the files on C: drive are selected, right-click them and choose Properties. The amount of space used is not equal to the amount of used space on your hard drive. There are certain type of files which do not appear in Windows explorer. The files which car called “shadow storage,” or “shadow copies,” do not appear here. Shadow storage contains System Restore points.
If you want to see the exact amount of storage used by shadow files on every hard drive attached to the system, run the command below. You would have to run it as an Administrator. Open a command prompt window as Administrator, look for Command Prompt in Start menu, right-click Command Prompt shortcut and choose Run as administrator.
Desktop and laptops have several partitions which includes a hidden recovery partition. A separate recovery partition does occupy some space in the new computer. You can use the Disk Management application included with Windows in order to check partition. Click Start, type partitions and choose the Create and format hard disk partitions shortcut in order to open it. In the disk management window hard drive should give its correct size.