Difference between Units of Digital Information

bit vs byte vs nibble

1 bit = 1 or 0

1 byte = 8 bits

1 Nibble = 4 bits (semi- octet)

Kilobit vs Kibibit

1 kilobit = 103 bits = 1000 bits.	1 kibibit = 210 bits = 1024 bits
Symbol = kbit or kb	Symbol = Kibit or Kib
KiloByte Symbol = KB	KibiByte Symbol = KiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

Megabit vs Mebibit

1 megabit = 106bits  = 1000000bits  = 1000 kilobits.	1 mebibit = 220 bits  = 1048576 bits  = 1024 kibibits
Symbol = Mbit or Mb	Symbol = Mibit or Mib
MegaByte Symbol = MB	MebiByte Symbol = MiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

Gigabit vs Gibibit

1 gigabit = 109bits  = 1000000000 bits.	1 gibibit = 230 bits  = 1073741824 bits  = 1,024 mebibits
Symbol = Gbit or Gb	Symbol = Gibit or Gib
GigaByte Symbol = GB	GibiByte Symbol = GiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

Terabit vs Tebibit

1 terabit = 1012 bits  = 1000000000000bits  = 1000 Gb	1 tebibit = 240 bits  = 1099511627776bits  = 1024 Gibit
Symbol = Tbit or Tb	Symbol = Tibit or Tib
TeraByte Symbol = TB	TebiByte Symbol = TiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

Petabit vs Pebibit

1 petabit = 1015 bits  = 1000000000000000bits  = 1000 terabits.	1 pebibit = 250 bits  = 1125899906842624bits  = 1024 tebibits
Symbol = Pbit or Pb	Symbol = Pibit or Pib
PetaByte Symbol = PB	PebiByte Symbol = PiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

  Exabit vs Exbibit

1 exabit = 1018bits  = 1000000000000000000bits  = 1000 petabits	1 exbibit = 260 bits  = 1152921504606846976bits  = 1024 pebibits
Symbol = Ebit or Eb	Symbol = Eibit or Eib
ExaByte Symbol = EB	ExbiByte Symbol = EiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

 zettabit vs zebibit

1 zettabit = 1021bits = 1000000000000000000000 bits = 1000 exabits.	1 zebibit = 270 bits = 1180591620717411303424 bits = 1024 exbibits
Symbol = Zbit or Zb	Symbol = Zibit or Zib
Zettabyte Symbol = ZB	ZebiByte Symbol = ZiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

 yottabit vs yobibit

1 yottabit = 1024bits = 1000000000000000000000000bits  = 1000 zettabits.	1 yobibit = 280 bits  = 1208925819614629174706176 bits = 1024 zebibits
Symbol = Ybit or Yb	Symbol = Yibit or Yib
YottaByte Symbol = YB	YottaByte Symbol = YiB
SI standard ( International System of Units)	IEC standard (International Electrotechnical Commission)

UEFI VS BIOS

BIOS or UEFI are interface which sits between OS  and Firmware

UEFI =  Unified Extensible Firmware Interface
BIOS = Basic Input/Output System
Firmware :  it is "Software for hardware". A firmware is a software which communicates directly with hardware. Whereas Other softwares like OS and Application uses it for accessing input/output from hardware.

UEFI	BIOS
Advanced GUI Based /Mouse supported	Basic GUI support /keyboard Supported
Secure Boot	--
Processor independent	Specific to x86 Processor
Works with GUID partition Table (GPT)	Works with MBR
Max Disk Size Supported =  8 ZiB (ZebiBytes)	Max Disk Size  Supported= 2TiB (TebiBytes)
Faster in Response	--

Secure boot :  It’s a kind of lock in that will not allow other (unsigned) OS to be loaded on the machine. Supported by Win8,2012, some linux distributions. We need to disable it to load other OS.
MBR: Master boot record
1 TiB = Tebi Byte (2⁴⁰ bytes)
1 zebibyte = 2⁷⁰ bytes

More to come

Steps to open BIOS /UEFI on your system

Bytes Table

Using UEFI to boot

Installing Linux on UEFI

More info on UEFI : http://www.uefi.org/about/