Want this question answered?
The smallest addressable unit of storage on a disk is called a sector.
Sectors (the smallest physical storage unit on a disk) is almost always 512 bytes (or 0.5 kb) in size.
It all depends on how your disk is formatted.
The smallest storage access unit on an IDE hard drive is a sector.
It is called a block (or sector). The size of the block varies depending upon the size of the disk, advanced preferences (the size of files normally being used on that disk), and the filesystem being used. They normally run from 512Bytes to 64KiB. As disk capacity continues to grow, look for even larger block sizes to come :-)
A cluster is the smallest unit of disk space that can be allocated to a file
Sector
The smallest unit of measurement used to describe the storage capacity of a computer is a "bit".
One bit.
Hard Drive Disk (HDD)
Hard Drive Disk (HDD)
Hard Drive Disk (HDD)