Grub Rescue - Complete Re-install of GRUB 2 from Live USB

Author: Nixie Pixel
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3m 49s Lenght
1059 Rating

Seeing nothing but the grub rescue prompt? Did Windows mess up your Master Boot Record? Using Ubuntu, GRUB 2 got you down? Who needs Live CDs? This video tutorial will show you how you can use an Ubuntu Live USB drive to reinstall GRUB, even when your boot device is inaccessible. Commands used in this video: sudo mount /dev/sda5 /mnt *****Using the linux installation on your hard drive instead of /dev/sda5 sudo mount --bind /dev /mnt/dev sudo mount --bind /proc /mnt/proc sudo mount --bind /sys /mnt/sys sudo chroot /mnt grub-install /dev/sda *****Using your boot device instead of /dev/sda CTRL-D sudo umount /mnt/dev sudo umount /mnt/proc sudo umount /mnt/sys sudo umount /mnt This video was produced on Linux and edited entirely using open source programs! My USB is a Mimobot, found here http://bit.ly/pSU2Wt Intro made in Linux by Yazlanka: http://twitter.com/#!/yazlanka Outtro thanks to Wayne Tedder :http://www.youtube.com/user/deathguppie

Comments

1. after mount command other command not working with kali Linux 2016.2 64
2. YOU ARE THE BEST! Thank you for this
3. sudo fdisk -l
   Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
   Units: sectors of 1 * 512 = 512 bytes
   Sector size (logical/physical): 512 bytes / 512 bytes
   I/O size (minimum/optimal): 512 bytes / 512 bytes
   Disklabel type: dos
   Disk identifier: 0x0414eef2
   
   Device Boot Start End Sectors Size Id Type
   /dev/sda1 * 2048 970481663 970479616 462.8G 83 Linux
   /dev/sda2 970483710 976771071 6287362 3G 5 Extended
   /dev/sda5 970483712 976771071 6287360 3G 82 Linux swap / Solaris
   
   
   
   
   
   
   
   
   
   root@parrot:~# sudo blkid
   /dev/sda1: UUID="8b852ae8-5096-4101-a746-0e012d32a8f7" TYPE="ext4" PARTUUID="0414eef2-01"
   /dev/sda5: UUID="153b93aa-fb50-45e7-8ed7-f6a804d51097" TYPE="swap" PARTUUID="0414eef2-05"
   root@parrot:~#
   
   
   
   
   
   
   
   
   
   
   root@parrot:~# cat /boot/grub/grub.cfg
   #
   # DO NOT EDIT THIS FILE
   #
   # It is automatically generated by grub-mkconfig using templates
   # from /etc/grub.d and settings from /etc/default/grub
   #
   
   ### BEGIN /etc/grub.d/00_header ###
   if [ -s $prefix/grubenv ]; then
   set have_grubenv=true
   load_env
   fi
   if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
   else
   set default="0"
   fi
   
   if [ x"${feature_menuentry_id}" = xy ]; then
   menuentry_id_option="--id"
   else
   menuentry_id_option=""
   fi
   
   export menuentry_id_option
   
   if [ "${prev_saved_entry}" ]; then
   set saved_entry="${prev_saved_entry}"
   save_env saved_entry
   set prev_saved_entry=
   save_env prev_saved_entry
   set boot_once=true
   fi
   
   function savedefault {
   if [ -z "${boot_once}" ]; then
   saved_entry="${chosen}"
   save_env saved_entry
   fi
   }
   function load_video {
   if [ x$feature_all_video_module = xy ]; then
   insmod all_video
   else
   insmod efi_gop
   insmod efi_uga
   insmod ieee1275_fb
   insmod vbe
   insmod vga
   insmod video_bochs
   insmod video_cirrus
   fi
   }
   
   if [ x$feature_default_font_path = xy ] ; then
   font=unicode
   else
   insmod part_msdos
   insmod ext2
   set root='hd0,msdos1'
   if [ x$feature_platform_search_hint = xy ]; then
   search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 8b852ae8-5096-4101-a746-0e012d32a8f7
   else
   search --no-floppy --fs-uuid --set=root 8b852ae8-5096-4101-a746-0e012d32a8f7
   fi
   font="/usr/share/grub/unicode.pf2"
   fi
   
   if loadfont $font ; then
   set gfxmode=auto
   load_video
   insmod gfxterm
   set locale_dir=$prefix/locale
   set lang=tr_TR
   insmod gettext
   fi
   terminal_output gfxterm
   if [ "${recordfail}" = 1 ] ; then
   set timeout=30
   else
   if [ x$feature_timeout_style = xy ] ; then
   set timeout_style=menu
   set timeout=5
   # Fallback normal timeout code in case the timeout_style feature is
   # unavailable.
   else
   set timeout=5
   fi
   fi
   ### END /etc/grub.d/00_header ###
   
   ### BEGIN /etc/grub.d/05_debian_theme ###
   insmod part_msdos
   insmod ext2
   set root='hd0,msdos1'
   if [ x$feature_platform_search_hint = xy ]; then
   search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 8b852ae8-5096-4101-a746-0e012d32a8f7
   else
   search --no-floppy --fs-uuid --set=root 8b852ae8-5096-4101-a746-0e012d32a8f7
   fi
   insmod png
   if background_image /usr/share/images/desktop-base/parrot-grub.png; then
   set color_normal=green/black
   set color_highlight=black/white
   else
   set menu_color_normal=cyan/blue
   set menu_color_highlight=white/blue
   fi
   ### END /etc/grub.d/05_debian_theme ###
   
   ### BEGIN /etc/grub.d/10_linux ###
   function gfxmode {
   set gfxpayload="${1}"
   }
   set linux_gfx_mode=
   export linux_gfx_mode
   menuentry 'Parrot GNU/Linux' --class parrot --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-8b852ae8-5096-4101-a746-0e012d32a8f7' {
   load_video
   insmod gzio
   if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
   insmod part_msdos
   insmod ext2
   set root='hd0,msdos1'
   if [ x$feature_platform_search_hint = xy ]; then
   search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 8b852ae8-5096-4101-a746-0e012d32a8f7
   else
   search --no-floppy --fs-uuid --set=root 8b852ae8-5096-4101-a746-0e012d32a8f7
   fi
   echo 'Linux 4.8.0-parrot-amd64 yükleniyor ...'
   linux /boot/vmlinuz-4.8.0-parrot-amd64 root=UUID=8b852ae8-5096-4101-a746-0e012d32a8f7 ro initrd=/install/initrd.gz noautomount quiet
   echo 'Başlangıç ramdiski yükleniyor ...'
   initrd /boot/initrd.img-4.8.0-parrot-amd64
   }
   submenu 'Parrot GNU/Linux için gelişmiş seçenekler' $menuentry_id_option 'gnulinux-advanced-8b852ae8-5096-4101-a746-0e012d32a8f7' {
   menuentry 'Parrot GNU/Linux, Linux 4.8.0-parrot-amd64 ile' --class parrot --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.8.0-parrot-amd64-advanced-8b852ae8-5096-4101-a746-0e012d32a8f7' {
   load_video
   insmod gzio
   if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
   insmod part_msdos
   insmod ext2
   set root='hd0,msdos1'
   if [ x$feature_platform_search_hint = xy ]; then
   search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 8b852ae8-5096-4101-a746-0e012d32a8f7
   else
   search --no-floppy --fs-uuid --set=root 8b852ae8-5096-4101-a746-0e012d32a8f7
   fi
   echo 'Linux 4.8.0-parrot-amd64 yükleniyor ...'
   linux /boot/vmlinuz-4.8.0-parrot-amd64 root=UUID=8b852ae8-5096-4101-a746-0e012d32a8f7 ro initrd=/install/initrd.gz noautomount quiet
   echo 'Başlangıç ramdiski yükleniyor ...'
   initrd /boot/initrd.img-4.8.0-parrot-amd64
   }
   menuentry 'Parrot GNU/Linux, with Linux 4.8.0-parrot-amd64 (recovery mode)' --class parrot --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.8.0-parrot-amd64-recovery-8b852ae8-5096-4101-a746-0e012d32a8f7' {
   load_video
   insmod gzio
   if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
   insmod part_msdos
   insmod ext2
   set root='hd0,msdos1'
   if [ x$feature_platform_search_hint = xy ]; then
   search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 8b852ae8-5096-4101-a746-0e012d32a8f7
   else
   search --no-floppy --fs-uuid --set=root 8b852ae8-5096-4101-a746-0e012d32a8f7
   fi
   echo 'Linux 4.8.0-parrot-amd64 yükleniyor ...'
   linux /boot/vmlinuz-4.8.0-parrot-amd64 root=UUID=8b852ae8-5096-4101-a746-0e012d32a8f7 ro single initrd=/install/initrd.gz noautomount
   echo 'Başlangıç ramdiski yükleniyor ...'
   initrd /boot/initrd.img-4.8.0-parrot-amd64
   }
   }
   
   ### END /etc/grub.d/10_linux ###
   
   ### BEGIN /etc/grub.d/20_linux_xen ###
   
   ### END /etc/grub.d/20_linux_xen ###
   
   ### BEGIN /etc/grub.d/30_os-prober ###
   ### END /etc/grub.d/30_os-prober ###
   
   ### BEGIN /etc/grub.d/30_uefi-firmware ###
   ### END /etc/grub.d/30_uefi-firmware ###
   
   ### BEGIN /etc/grub.d/40_custom ###
   # This file provides an easy way to add custom menu entries. Simply type the
   # menu entries you want to add after this comment. Be careful not to change
   # the 'exec tail' line above.
   ### END /etc/grub.d/40_custom ###
   
   ### BEGIN /etc/grub.d/41_custom ###
   if [ -f ${config_directory}/custom.cfg ]; then
   source ${config_directory}/custom.cfg
   elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
   source $prefix/custom.cfg;
   fi
   ### END /etc/grub.d/41_custom ###
   root@parrot:~#
   
   
   
   40/5000 Windows a night please help please
4. i wanna put my usb drive in ...
   and doesn't matter what i said i love your voice and face ..
5. too many command, I have fixed grub rescue too many time. Finally, I found effective solution at this web: http://askubuntu.com/questions/143667/boot-error-no-such-device-grub-rescue.
   sudo fdisk -l
   create folder in home: /home/ubuntu/temp
   sudo mount /dev/sda5 /home/ubuntu/temp
   sudo grub-install --root-directory=/home/ubuntu/temp /dev/sda (with /dev/sda is hard disk name)
6. Is it work on efi system
7. hey, I need to install trusted grub which would then help me to secure boot the encrypted disk partition. Do you have and tutorial on how to install trusted grub on ububtu
8. This video has saved me twice.. :|
9. Holey shit am I ever glad I tried to install Linux. I must have been sleep deprived when I believed some Linux asshole that his grandmother could use Linux. My mother would say that you must be on drugs
10. hey , on my pc i removed windows and my HDD is empty so when i install ubantu it installing correctly but after rebooting msg when i reboot it nothing has open expect dell test.....
    how can i solve this ..............?
11. thank it good work
12. I love you <3 thanx a lot
13. Ohh thanks a lot
    It worked.
    I tried several methods mentioned in forum and ended up getting errors.
    Your tutorial worked fine
    PS I have Linux mint and yes it works for Linux mint as well.
14. simply -command not found grub install
15. Does this work Kali as well? My issue is i can see the entire install, I have some mirror issues but i know why on that, least i hope lol! but after reboot my screen come on select kali the the screen get squiggly line as in the image get all cut up and squiggly lol then a blank dark screen (nothing to do w/power)!
16. what if I have debian?
17. On the last step something goes wrong, it displays this:
    
    grub-install: warning: File system 'ext2' doesn't support embedding.
    grub install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However blocklists are UNRELIABLE and their use is discouraged..
    grub-install: error: will not proceed with blocklists.
    
    What am I supposed to do?
    EDIT: looks like I was a moron and I made a mistake on the step "grub-install /dev/sda" , I accidentally wrote sda2 (my root partition). I hope I did't screw my system up with it. It installed properly now, but got a warning message:
    
    grub-install: warning: Sector 32 is already in use by the program 'FlexNet' ; avoiding it. This software may cause boot or other problems in future. Please ask it's authors not to store data in the boot track.
    Installation finished. No error reported
    
    So I guess it should be ok?
    EDIT2: Ok, I have managed to fuck it up somehow. My system boots into Ubuntu without offering that GRUB screen where I could choose for Windows. I think I will just format the whole fucking SSD and start all over again, installing windows first, then Ubuntu. Fuck, I thought they have figured out an easier way to do these things. Looks like if you install Ubuntu first, you are pretty much screwed.
18. Is my SDA1 my regukar hard drive and SDA2 my external Maxtor hard drive? My guess is 1 is the primary inside the PC, 2 is the pne in the external dock. Right?
19. i must kindly ask for assistance.
    
    I'm trying to install Lubuntu and it keeps coming up with "Bootloader install failed" and a grub error. It could possibly be something I'd doing wrong, how would I tell?
20. .......and they opened thy Book of Linux and said,............though shalt not use thy archaic cd/dvd device no longer, nor shalt though use Windows, though shalt take part in the light and use yon mighty flash drives, SSD drives and throw thy cds/dvds to a wattery grave..............................Uhhhhhhmmmmmm Butu