What are Unit Letters

With so many physical and logical partition volumes on a computer, the need for a drive identification system becomes apparent. Microsoft uses a drive letter system to identify these partitions. History
The operating system known as CP/CMS created the first letters of the disk, called filemodes. The microcompter CP/M operating system later adopted a similar method, using drive letters to refer to legacy physical storage. Microsoft then used the CP /M drive letter format for MS-DOS, OS/2, and Microsoft Windows. Microsoft drive letters can refer to physical and logical volumes.
A & B
drive letter A originally referred to a computer’s first floppy drive, while drive letter B referred to the second floppy drive. As floppy drives become less common, users assign drives A and B to removable drives, hard drive partitions or mapped network drives.
drive letter C usually refers to the first active partition of the computer’s hard drive. Some computers use drive C as another floppy disk drive, while others use drive C as a later hard drive partition
D – . letters Z
drive D to Z often refer to non-primary hard disk partitions, additional floppy drives, optical disk drives, and removable storage drives.

Related articles
· How to read an image CD
· How to Restore a Deleted Folder on an EMC NAS
· How to copy memory from a PC computer to a card…
· How to Convert Corrupt Lotus 123 Text to English
· What is an IDE controller
· How to Replace Hard Drive for My Dell Laptop…
· How to repair a VHD file
· How to clear USB memory
· How to Copy an Invisible Restore Partition
· How to reinstall software on a laptop hard drive…
Featured articles
· How to prevent Mac Spoofing
· How to update the BIOS or Flash
· How to delete a partition when formatting a hard drive…
· MacBook Pro 17 Disassembly Guide
· How to set up the Master Boot Record
· How to put more memory on a Mac
· How to change DDR2 memory speed in BIOS
· How to Repair Damaged Disk Sectors
· How to Fix CD Restore Plus ! CD Kit for Dell La…
· How to Remove the Hard Drive on a Dell 9100

Leave a Comment

Your email address will not be published. Required fields are marked *