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The list about the devices/partitions/files or logical volumes and their file systems, through this file the OS will know how to mount them
when the computer starts.
'''Question 5. Explain Linux boot proccess ? '''
1) Code in ROM BIOS finds and loads 1st stage loader from boot device (MBR)
2) 1st stage loader finds and loads 2nd stage loader (GRUB)
3) 2nd stage loader finds and loads Linux kernel and initial ram disk
4) Kernel checks the system hardware, mounts the root device and loads the needed kernel modules.
5) Kernel runs init program (PID = 1)