How to repair the EFI Bootloader in Windows 8. Accounting Software Source Code C. Are you hungry right nowYes Then this analogy will make sense because Im going to reference my favorite sandwich of all time A Prosciutto, Soppressata, Italian hero with Banana peppers, fresh mozzarella and oregano. Think of EFI like the palatable center of my Italian sandwich. Your system board is the bottom part of the roll and the OS, Windows 8, is the top half. EFI, short for Extensible Firmware Interface, forms a delicious layer of protection against pernicious badware Rootkits anyone by requiring valid digital signatures from the bootloader. It also replaces the antiquated Master Boot Record MBR with the modern GUID Partition Table GPT so your computer can stop ignoring hard disks larger than 2. The rEFInd Boot Manager Keeping rEFInd Booting. Roderick W. Smith, rodsmithrodsbooks. Originally written 4242016 last Web page update 10222017. Does Your Computer Use EFI EFI is a type of firmware, meaning that its software built into the computer to handle lowlevel tasks. Most importantly, the firmware. If youre coming here from Google searching for how to convert a GPT disk layout to MSDOSMBR and dont want to read through my probably boring story, click here. Fedora Repair Grub After Windows Installation' title='Fedora Repair Grub After Windows Installation' />TB. The bootloader is the program that kicks off the show. After the PC finishes a sequence of hardware health checks known as a Power On Self Test POST, the bootloader enters the scene and galvanizes the OS. But what happens when the computer fails to boot What do we do when the bootloader becomes damaged and the OS refuses to obey the ordinance to startThe example I adduced above is a good reason to have a Windows 8 USB recovery drive on hand. If you dont have that, see if you can boot to the original Windows 8 DVD that came with the system. If you cant find that either then take a breath, stay composed and get Easy Recovery Essentials. Easy. RE is a great utility because it automatically detects and repairs common problems with the bootloader, BOOTMGR and winload. The only draw back is that it costs between 2. Windows. You can view the 4 minute Youtube demo to see if its worth it but first I want to show you something that might fix your problem for freeStart up your dilapidated computer with the USB or DVD Windows 8 recovery media in the system. You want to get to the Advanced options screen so you can open the beloved command prompt. Fedora Repair Grub After Windows Installation' title='Fedora Repair Grub After Windows Installation' />When the computer boots off the recovery media, pick the Troubleshoot option. Then choose Advanced Optionsand head on over to the Command Prompt. The computer should reboot and then ask you for the account. Click your account to continue. Then login to get started. Were going to use the built in partitioning tool called diskpart to confirm that We have all the right partitions. EFI partition is formatted correctly. In the black screen that looks like a dark abyss, type diskpartand enter this command sel disk 0. Now that the first disk is selected we need to view all the partitionslist vol. Verify that the EFI partition is using the FAT3. GRUB-Ubuntu.png' alt='Fedora Repair Grub After Windows Installation' title='Fedora Repair Grub After Windows Installation' />Ive spent a lot of time trying to get my Windows 8 PC to boot again after cloning to a new SSD and try to summarise how I finally got it all working. Remote wipe for Windows clients None december 16, 2010 om 112 pm. Hmmm, overly complicated, obfuscated scripting that is intended to. GNU GRUB short for GNU GRand Unified Bootloader is a boot loader package from the GNU Project. GRUB is the reference implementation of the Free Software Foundation. This article explains, how to rescue, repair or reinstall a damaged Ubuntu machine which cannot be booted due to the Grub2 boot loader has been compromised. Fedora Core and Red Hat Linux CD Installation, Version Upgrade, Configuration and Basic Administration. This tutorial covers the installation andor upgrades. Verify that the EFI partition is using the FAT32 file system then select the volume and assign a drive letter to it. Since im using Windows 8 from a VirtualBox. Since im using Windows 8 from a Virtual. Box image you wont see the FAT3. FedoraDualWindows23-600x450.png' alt='Fedora Repair Grub After Windows Installation' title='Fedora Repair Grub After Windows Installation' />Volume Number. Assign the Drive Letter. Lets say your EFI partition is on Volume 3, the next thing you would type is sel vol 3. Then assign an arbitrary drive letter to the parition. Lets use v. assign letterv You should see a message saying Disk. Part successfully assigned the drive letter or mount point. Exit the diskpart tool by typing exit. You should still be in the command prompt but outside of the DISKPART prompt. Repair the Boot Record. We need to repair the boot record. We can pull that off like so cd d v EFIMicrosoftBootbootrec fixboot. The CD command tells the command line interpreter to change the directory to the volume label that has the EFI boot record. Then the bootrec fixboot command attempts to repair the selected volume. Alright, still with meRebuild the BCD store. Now we need to recreate the Boot Configuration Data BCD store, so lets backup the existing store first. Type ren BCD BCD. Now that we backed it up, lets recreate the BCD store bcdboot c Windows l en us s v f ALLBCDBoot is little tool that lets you manage the system partition files. In plain english, this command says Hey Windows, Im going to use C Windows as the source for copying all my boot environment files and Im going to use the English locale and select the volume letter that begins with v The f ALL thingy updates all the BIOS settings. Now remove the recovery media and reboot and you should be all set.