Linux Booting

 

 

 

 

 

 

 

Linux Booting & Mount

💡 Linux Booting

• Booting (BootStrap)
  Booting is the process of starting a computer

 

• BIOS (Basic Input Output System)
  firmware used to perform harware intilization during the booting process (power-on startup)
  and to provide runtime services for operating systems and programs
  컴퓨터에 잠식되어있는 하드웨어를 초기화 시킴
  전원을 키면 가장 먼저 실행되는 프로그램
  
  
• POST (Power On Self Test)
  the diagnostic testing sequence that a computer’s basic input/output system

 

Booting

• Legacy BIOS
  Four entry to partition tables
  32bit address, Limit 2TB HDD
  
  
• EFI BIOS
  128 entry to partition tablesEFI BIOS call bootloader, then that read
  EFI System Partition
  .efi file and run boot manager to OS
  .efi file have information of booting to OS
  64bit address, Limit 8ZB HDD