Command language compatible with configuration file GRUB additional features

Command language compatible with configuration file

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Command language compatible with configuration file GRUB additional features: MD5 encrypted passwords Hiding/Unhiding partitions 10/29/2018 8
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GRUB Grand Unified Bootloader 10/29/2018 9
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/boot/grub/grub.conf or /boot/grub/menu.lst 10/29/2018 10
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Starting the kernel Once the kernel is loaded, it is started by the boot loader On most architectures (including i386) the kernel is compressed with a decompress program included When the kernel starts, it detects all hardware and switches the CPU to multitasking, multiuser mode 10/29/2018 11
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Initial RAM Disk (initrd) An initial RAM Disk (initrd ) is needed if the kernel can’t access the root filesystem without modules (SCSI, LVM, RAID, ext3, reiser) The initrd is loaded into memory by the boot loader The initrd contains a linuxrc script that loads the modules from the RAM disk, then starts init 10/29/2018 12
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init Init is started by the kernel or linuxrc Init reads configuration file /etc/inittab Decides on default runlevel if no runlevel is given Runlevels have different meaning 0: halt 1: single user mode 2: multiuser without NFS 3: full multiuser mode 4: unused 5: multisuer with graphical login
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  • Fall '19
  • Elie Nasr

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