$schemamarkup = get_post_meta(get_the_ID(), 'schemamarkup', true); if(!empty($schemamarkup)) { echo $schemamarkup; }

Step-by-step – Reinstall GRUB on Parrot OS Guide

June 30, 2021 | By the+gnu+linux+evangelist.

Fixing GRUB

  1. 2. Booting Live OS

    First, Boot from a Live Parrot OS
    On a PC or Virtual Machine you may need to Enter BIOS and Set the ROM/Drive as the First, loading Device.

  2. 3. Chrooting Parrot

    Now to Chroot Parrot OS
    First, switch to the Admin Prompt:

    sudo su

    Now make the Target Directory with:

    mkdir /mnt/chrootdir

    Then Mount the main Partition:

    mount /dev/sda1 /mnt/chrootdir

    And the required Directories:

    for dir in proc dev sys etc bin sbin var usr lib lib64 tmp; do
    mkdir /mnt/chrootdir/$dir && mount --bind /$dir /mnt/chrootdir/$dir
done

    Last, to Chroot simply play:

    chroot /mnt/chrootdir

  3. 4. Fixing GRUB

    Now to Reinstall GRUB on Parrot
    Run:

    grub-install /dev/sda

    And again:

    update-grub2

    Next to Exit Chroot Env:

    exit

    Finally, Reboot into your Restored System

    reboot now

    Thanks to askubuntu.com #254491.

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