Sage-Tips

How do I fix bootloader?

If you do have the Installation Media :

1. Insert the Media (DVD/USB) in your PC and restart.
2. Boot from the media.
3. Select Repair Your Computer.
4. Select Troubleshoot.
5. Choose Command Prompt from the menu : Type and run the command : diskpart. Type and run the command : sel disk 0. Type and run the command : list vol.

How do I force GRUB menu on boot?

Booting into recovery mode

1. Switch on your computer.
2. Wait until the UEFI/BIOS has finished loading, or has almost finished.
3. With BIOS, quickly press and hold the Shift key, which will bring up the GNU GRUB menu.
4. Select the line which starts with “Advanced options”.

Can I boot without grub?

Since version 3.3. x, and ONLY on EFI machines, it is possible to boot the Linux kernel without using a bootloader such as iELILO or GRUB. You will experience shorter boot times by using this, but a less interactive boot in case you need to make some diagnostics.

How do I fix GRUB menu?

The graphical way

1. Insert your Ubuntu CD, reboot your computer and set it to boot from CD in the BIOS and boot into a live session. You can also use a LiveUSB if you have created one in the past.
2. Install and run Boot-Repair.
3. Click “Recommended Repair”.
4. Now reboot your system. The usual GRUB boot menu should appear.

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 manually boot Vmlinuz?

To manually boot linux, you still need to have a bootloader. Normally you just press enter or wait for a timeout, and the default image loads. But you can specify both a kernel image to load and some parameters. At the grub prompt, type ‘vmlinuz root=/dev/sda1’ (not sure about the leading / on vmlinuz).

How do I fix grub rescue dual boot?

How To Fix: error: no such partition grub rescue

1. Step 1: Know you root partition. Boot from live CD, DVD or USB drive.
2. Step 2: Mount the root partition.
3. Step 3: Be the CHROOT.
4. Step 4: Purge Grub 2 packages.
5. Step 5: Re-install Grub packages.
6. Step 6: Unmount the partition:

How do I rebuild GRUB?

Resolution

1. Place your SLES/SLED 10 CD 1 or DVD in the drive and boot up to the CD or DVD.
2. Enter the command “fdisk -l”.
3. Enter the command “mount /dev/sda2 /mnt”.
4. Enter the command “grub-install –root-directory=/mnt /dev/sda”.
5. Once this command completes successfully reboot your system by entering the command “reboot”.

How to boot from USB with GRUB2?

I. Format your USB Flash Drive to use a Single Partition. The following assumes you’re already up and running from a Linux desktop with your flash drive plugged in.

II. Create a Fat32 Filesystem on the USB Flash Drive. For the following steps,replace x with your usb device.

III. Install Grub2 on the USB Flash Drive.

IV. Adding the Bootable ISO files.

How to boot Linux from GRUB command line?

See Normal Prompt GRUB prompt aways looks like this: grub>_It means it waits the user to enter a command.

See All The Hard Disk Drives Type ls command like this: ls so if you have only 1 hard disk drive with 3 partitions,you will have output like

See Your OS Partition You should remember where is your OS partition,whether it is in the first hard disk or in the second hard disk.

The First Command The first command to perform is to enter the hard disk drive.

The Second Command The second command is to call the operating system kernel to live.

The Third Command The third command is to call initrd (initial ram disk) to help kernel to boot.

The Fourth Command The fourth command is to execute all three commands have typed. In another word,to boot the OS. The command is simply: boot

Commands Summary We need four simple commands to boot a GNU/Linux operating system: set root= (hd0,3) linux/boot/vmlinuz-4.2.0-16-generic root=/dev/sdb3 initrd/boot/initrd.img-4.2.0-16-generic boot

The Result

How do I remove Ubuntu from boot menu?

To remove Ubuntu from Boot menu please follow below instructions: 1 – Start CMD as an Administrator. Open Start Screen by moving your mouse to the down-left corner of the screen and then type cmd after it found Command Prompt, right click on it and select “Run as Administrator” from the menu in the down of the screen.