Hard drives follow Natural Convention(powers of 10) where 1KB=1000Bytes

Computers follow Binary in powers of 2 where it accesses hard disks data in power’s of 2.

Natural Convention:

1 natural KB=10^3 bytes

1 natural MB=10^6 bytes

1 natural GB= 10^9 bytes

1 natural TB=10^12 bytes

In Computers

1KB=2^10 bytes =1024 bytes

1 MB= 2^20 bytes =1024 x 1024 bytes

1 GB=2^30 bytes =1024 x 1024 x 1024 bytes

1 TB=2^40 bytes =1024 x 1024 x 1024 x 1024 bytes

….

#### This is my answer to popular quora question