Why is there no A or B partition

whs

whs

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Someone asked me today why the partition numbering always starts with C and why there are no A or B partitions. I did not know the answer. Does anybody know?
 

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Letters A and B are reserved for Floppy Drives. C to Z are reserved for Hard Disks, CD, DVD, TAPE and Other Magnetic Drives and Disks.
 

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AMD Phenom II X4 3.0GHz
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ASUS M5A97
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8GB G-Skill Ripjaws DDR3 1333
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PNY GeForce 460 GTX 1GB OC - Enthusiast Edition
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VIA High Definition Audio
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Dell 19"
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OCZ Fata1ty 700W Modular PSU
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Myself
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Windows 7 Ultimate 64Bit
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C2D E8200
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XFX 750i
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8GB PNY PC2-6400
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BFG 9600GT x 2
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Stock XFX Optical
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C: 1 TB G: 500 GB H: 500 GB
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Ultra LSP 550 Pro Lifetime Series
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Possibly due to past practice of reserving A & B for floppy drives? I know you can still set it later... I made my back-up HDD drive B:
 

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Windows 8.1 Professional x64Intel Core i7-3930K 3.2 gHz Hex-Core (Turbo B...8GB Corsair Vengeance DDR3-1600MHz 8-8-8-24EVGA Superclocked GeForce GTX-580 1536MB
Computer type
PC/Desktop
Computer Manufacturer/Model Number
CyberPower PC / Custom Intel X79 PC
OS
Windows 8.1 Professional x64
CPU
Intel Core i7-3930K 3.2 gHz Hex-Core (Turbo Boost 3.8 gHz)
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ASUS P9X79 Pro (BIOS rev 4801)
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8GB Corsair Vengeance DDR3-1600MHz 8-8-8-24
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EVGA Superclocked GeForce GTX-580 1536MB
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On-board 7.1 Realtek ALC898 HD Audio
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ASUS 27" 1080p MT276E
Screen Resolution
1920 x 1080
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Intel Cherryville 520 SSD 120GB (Main drive for OS)
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WD Caviar Blue 1TB 7200RPM 64MB Cache SATA 6
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Corsair Professional Series AX850 80+ Gold
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Corsair Carbide 400R
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Corsair Hydro Series H60 / 9 x 120mm Thunderblade case fans
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Microsoft Wireless Keyboard 3000 v2
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Microsoft Wireless Mouse 5000 - BlueTrack
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TWC Road Runner 30 Mbps
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MS Security Essentials / Malwarebytes
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IE 11
Other Info
LG Black 12X SATA BD-RW
Sony Optiarc Black 24X SATA DVD Burner
Logitech Web Cam Pro 9000
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Epson XP-310 Color Printer
Xbox One Controller
Xbox 360 PC Controller
Thanks guys. That was simple. I was not around PCs during the floppy times so I did not know that. One never stops learning.
 

My Computer My Computer

At a glance

Vista, Windows7, Mint Mate, Zorin, Windows 8from 1.6GHz Duo to i7
Computer Manufacturer/Model Number
HP, Dell, Gateway, Toshiba - 4 laptops and 2 desktops
OS
Vista, Windows7, Mint Mate, Zorin, Windows 8
CPU
from 1.6GHz Duo to i7
Monitor(s) Displays
2x HP w2207
Hard Drives
5x HDD, 7x SSD, 12x Externals
Keyboard
with trackball - no mices
Mouse
Trackball mice
Internet Speed
DSL 6000
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