Grub

How to Easily Fix Window and Linux Boot Problems with the Super Grub Disk

How to Easily Fix Window and Linux Boot Problems with the Super Grub Disk
  1. How do I use Super Grub Disk?
  2. How do you fix grub on Windows?
  3. What is Super Grub Disk?
  4. How do I start Windows from GRUB command line?
  5. What are the grub rescue commands?
  6. How do I manually install grub?
  7. How do I restore Windows Boot Manager?
  8. How do I skip grub in rescue mode?
  9. How do I bypass boot Windows without grub rescue?
  10. How do I install GRUB on Windows?
  11. How do I use GRUB2?
  12. How do you use Rescatux?

How do I use Super Grub Disk?

Wizard steps to perform

  1. Download Super Grub2 Disk.
  2. Put Super Grub2 Disk into a media.
  3. Boot from media.
  4. Super Grub2 Disk – Press return at boot. Booting with CDROM or with USB built with dd. ...
  5. Detect any Operating System. ...
  6. Select the OS you want to boot. ...
  7. Find out what your hard disk and root partition devices are. ...
  8. Restore grub.

How do you fix grub on Windows?

How do I fix Windows 10 Grub Rescue errors?

  1. Clean Install Windows 10. ...
  2. Set the correct partition. ...
  3. Reset BIOS Settings. ...
  4. Use Windows 10 Automatic Repair to restore the Boot Sector Code. ...
  5. Rebuild BCD using Windows 10 Automatic Repair. ...
  6. Clean Install Windows 10. ...
  7. Replace Hard Drive.

What is Super Grub Disk?

Super Grub2 Disk is a live CD that helps the user to boot into almost any operating system even if the system cannot boot into it by normal means. This allows a user to boot into an installed operating system if their GRUB installation has been overwritten, erased or otherwise corrupted.

How do I start Windows from GRUB command line?

Here are the steps to do this.

  1. Boot your system to the GRUB menu.
  2. Select (highlight) the GRUB boot menu entry Windows 7 (loader) (on /dev/sda1) .
  3. Press e to edit the GRUB boot commands for Windows 7.
  4. Make two changes to this list of commands as illustrated in the menuentry above.

What are the grub rescue commands?

Normal

CommandResult / Example
linuxLoads the kernel; insmod /vmlinuz root=(hd0,5) ro
loopMount a file as a device; loopback loop (hd0,2)/iso/my.iso
lsLists the contents of a partition/folder; ls, ls /boot/grub, ls (hd0,5)/, ls (hd0,5)/boot
lsmodList loaded modules

How do I manually install grub?

1 Answer

  1. Boot the machine using a Live CD.
  2. Open a terminal.
  3. Find out the name of the internal disk by using fdisk to look up the device's size. ...
  4. Install GRUB boot loader onto the proper disk (the example below assumes it is /dev/sda ): sudo grub-install --recheck --no-floppy --root-directory=/ /dev/sda.

How do I restore Windows Boot Manager?

The instructions are:

  1. Boot from the original installation DVD (or the recovery USB)
  2. At the Welcome screen, click Repair your computer.
  3. Choose Troubleshoot.
  4. Choose Command Prompt.
  5. When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.

How do I skip grub in rescue mode?

Now select type (in my case GRUB 2), select name (whatever you want, the given name will be displayed at boot menu) and now select your drive in which Linux is installed. After then click "add entry", now select "BCD Deployment" option , and click on "write MBR" to delete GRUB Boot loader, and now restart.

How do I bypass boot Windows without grub rescue?

3 Answers

  1. ls.
  2. set prefix=(hdX,Y)/boot/grub.
  3. set root=(hdX,Y)
  4. set.
  5. ls /boot.
  6. insmod /boot/grub/linux. mod.
  7. linux /vmlinuz root=/dev/sdXY ro.
  8. initrd /initrd. img.

How do I install GRUB on Windows?

2 Answers

  1. mount your Linux installed partition to some mount point. ...
  2. Now bind some essential live root partition directories to mounted root partition at /mnt. ...
  3. Now, change the root to newly mounted partition directory. ...
  4. Now, install the GRUB using grub-install command at your HDD MBR.

How do I use GRUB2?

Installing GRUB2 on a BIOS system

  1. Create a configuration file for GRUB2. # grub2-mkconfig -o /boot/grub2/grub.cfg.
  2. List block devices available on the system. $ lsblk.
  3. Identify the primary hard disk. ...
  4. Install GRUB2 in the MBR of the primary hard disk. ...
  5. Reboot your computer to boot with the newly installed bootloader.

How do you use Rescatux?

Wizard steps to perform

  1. Download Rescatux.
  2. Put Rescatux into a media.
  3. Boot from media.
  4. Rescatux – Press return at boot. This wizard step will help you to identify when to press return at Rescatux boot. ...
  5. Wait for Rescapp to open. ...
  6. Select Restore Grub option. ...
  7. Select your Grub partition. ...
  8. Select your main hard disk.

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