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LPI

201-450 · Question #133

A GRUB boot loader installed in the MBR was accidentally overwritten. After booting with a rescue CD-ROM, how can the lost GRUB first stage loader be recovered?

The correct answer is D. Run grub-install after verifying that grub.conf is correct. See the full explanation below for the reasoning.

203 System Startup

Question

A GRUB boot loader installed in the MBR was accidentally overwritten. After booting with a rescue CD-ROM, how can the lost GRUB first stage loader be recovered?

Options

  • AUse dd to restore a previous backup of the MBR
  • BInstall LILO since there is no easy way to recover GRUB
  • CRunning mformat will create a new MBR and fix GRUB using info from grub.conf
  • DRun grub-install after verifying that grub.conf is correct.
  • ERun fdisk --mbr /dev/had assuming that the boot harddisk is /dev/hda.

How the community answered

(43 responses)
  • A
    2% (1)
  • B
    5% (2)
  • C
    2% (1)
  • D
    84% (36)
  • E
    7% (3)

Topics

#GRUB recovery#MBR#grub-install#boot loader

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