![]() How to Install Windows 8. Ubuntu. As you know, the most common, and probably the most recommended way of dual booting Ubuntu and Windows is to install Windows first and then Ubuntu. But what if you want to install Windows second? Ubuntu/Linux already installed. This guide assumes that you have Ubuntu already installed on your system, and will guide you through installing Windows 7/8/8. How Do I Install Grub Debian ScreenshotsUbuntu/Linux partition. The problem here is that the Windows installer tends to overwrite Grub bootloader or whatever making only the Windows installation bootable. But the good news is that your Linux partition is untouched, including the original bootloader and the other Grub configurations. So restoring or recovering the Grub is just a matter of slapping a few commands on the terminal. Install Windows on a Separate Partition. If your Ubuntu installation occupies the entire hard drive, to be able to create free space for the Windows installation. GParted. GParted comes preinstalled on Ubuntu Live. CD. Boot into a Windows installation media and complete with the installation. Once installed, because of Microsoft’s false assumption that there are no non- Microsoft operating systems you’ll be taken straight into Windows. Restore / Reinstall Grub 2 with a Ubuntu Live Media. Now boot into a Ubuntu Live/USB or CD. Open a terminal. (Ctrl + Alt + t)Use lsblk, blkid commands or GParted to identify your Linux root, and boot partitions. You may or may not have a separate boot partition. In my case`/dev/sda. Linux boot partition`/dev/sda. Linux root partition`/dev/sda. The UEFI GRUB2 (Partition 2) Menu System For UEFI-booting direct from.ISO.EFI and other payload files using grub2. The UEFI_GRUB2_PTN2_Beta8A.zip free download is. How Do I Install Grub Debian Forum![]()
Windows partition. Now we’ll be repairing our old grub bootloader in a chroot environment. Setup a Chroot Environment. Mount your root filesystem under `/mnt`sudo mount /dev/sda. If you’re using BTRFS (New Linux B- Tree File System) instead of EXT4, the above command should change tosudo mount - t btrfs - o [email protected] /dev/sda. Run ls /mnt to verify that the correct partition is mounted. And it should list the content of your root. Mount the boot partition (SKIP if you don’t have a separate boot partition). If you have a EFI partition you should mount that also. It is basically a small FAT3. Please see the #example case 2. Bind the directories, so grub can detect other operating systems, like so. Lets chroot into our existing Ubuntu/Linux system on the hard disk. Reinstall Grub. grub- install /dev/sda (specify the disk `/dev/sd. X`, not `/dev/sda. X`). grub- install - -recheck /dev/sd. X. exit. Then restart the computer. On next reboot Grub will be the default bootloader and you’ll be presented with a list of operating systems to choose from (Ubuntu and Windows, of course). Reinstalling Grub in an EFI Based System. Reinstalling Grub bootlaoder in an UEFI based computer is no different from installing Grub on a legacy Bios system. Here we also mount the EFI partition before chrooting, as we’d do with the boot partition. Example Case #2. Here /dev/sda. EFI partition and /dev/sda. For EXT4 filesystem: `sudo mount /dev/sda. Mount efi partition under ‘/mnt/boot/efi’sudo mount /dev/sda. Forgetting to do so will result in errors being thrown while trying to execute `grub- install`: “/boot/efi does not appear to be the efi partition”As shown previously, bind the /dev, /dev/pts, /proc, and /sys directories. Finally. sudo chroot /mnt. In some rare occasions Grub might not detect Windows. In that case just login to Ubuntu (installed one on the disk, not the bootable Live USB/CD) and execute,sudo os- prober. Happy Dual- Booting!
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November 2017
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