The first step in customizing boot options in operating systems is to add a new boot entry for an operating system. A boot entry is a set of options that define a load configuration for an operating system or bootable program.
You can have multiple boot entries for an operating system, each with a different set of boot parameters. Windows Installer creates a standard boot entry when you install an operating system, and you can create additional, customized boot entries for an operating system by editing the boot options.
You can add, delete, and change the options in the boot entry that Windows Installer created. However, it is prudent to keep the standard entry and, instead, add a separate entry that you customize.
Edit Windows Boot Manager With MSConfig.exe. Another tool you can use to edit Windows Boot Manager is MSConfig.exe. Most importantly, MSConfig.exe can be used to troubleshot and resolve boot errors. To edit BOOTMGR with MSConfig, follow the steps outlined below: Right-click the Windows logo on the left of taskbar and select Run. The Windows Boot Manager section describes the location of the boot manager, along with other identifiers. The Windows Boot Loader section describes the Windows 10 bootloader for this system, the unique identifier, where to find winload.exe to continue the boot process, if the partition has recovery enabled, and the root of the system directory. How to fix the Windows 10 boot loader from Windows. Ask Question Asked 4 years, 1 month ago. It might be helpful to edit your question (and its title) to specify that you're looking for a solution that doesn't involve the installation media. There's unfortunately almost no up-to-date guides on fixing the UEFI Windows Boot Manager. Get to Know What Boot Manager Is. Officially, Windows Boot Manager (BOOTMGR) is a small piece of software, called a boot manager. BOOTMGR is used to start your Windows 10, Windows 8, Windows 7, or Windows Vista operating system startup. To change the default operating system in the boot menu in Windows 10, do the following. In the boot loader menu, click the link Change defaults or choose other options at the bottom of the screen. On the next page, click Choose a default operating system. On the next page, select the OS you want to set as the default boot entry. Oct 25, 2017 Windows 8 and 10 consolidate various boot options into a single screen named the “Advanced Options” menu. This menu provides access to repair tools and options for changing Windows startup behavior—such as enabling debugging, booting into safe mode, and launching into a.
To add a boot entry, copy an existing boot entry, and then modify the copy.
This topic applies to Windows Vista and later, Windows Server 2008 and later, and Windows Recovery Environment.
Adding a new boot entry
In Windows, you use BCDEdit to modify your boot options. To add a new boot entry, open a Command Prompt window with elevated privileges (right click Command Prompt and click Run as administrator from the shortcut menu).
Note Before setting BCDEdit options you might need to disable or suspend BitLocker and Secure Boot on the computer.
The easiest way to create a new boot entry is to copy an existing entry and then modify it as you need. To do this, use BCDEdit with the /copy option. For example, in the following command, BCDEdit copies the Microsoft Windows boot entry that was last used to boot Windows, identified as {current}, and creates a new boot entry. The /d description option specifies DebugEntry as the name of the new boot entry.
If the command succeeds, BCDEdit displays a message similar to the following:
When you copy a boot loader entry that appears on the boot menu, the copy is automatically added as the last item on the boot menu.
The GUID in the preceding message (which appears between braces ({})) is the identifier of the new boot entry. The /copy option creates a new GUID for the boot entry. You use the identifier to represent the entry in all subsequent BCDEdit commands.
If the command fails, be sure that you are running in a Command Prompt window with administrator privileges and that all of the command parameters are spelled correctly, including the braces around {current}.
You can also add a boot entry using the /create option. This method is more difficult because you need to provide additional information about the boot entry type. You also need to specify the /application, /inherit, or /device options. For example, the following creates a new operating system boot entry called 'My Windows Vista':
When you use the /create option, the new boot loader entries are not added to the boot menu automatically. The /create option creates a new GUID for the boot entry. You must add the new boot entry to the boot menu by using the /displayorder option. You can place the boot loader entries in any order.
For information about the /create command parameters, type bcdedit /? /create in a Command Prompt window.
Editing the boot menu
In Windows, new boot loader entries are not added to the boot menu automatically. You can place the boot loader entries in any order.
You can use the /displayorder option to set the order in which the boot manager displays the boot entries on a multi-boot menu. The command has the following syntax:
The ID is the GUID of the boot entry or a reserved identifier, such as {current}). Separate each identifier with a space. Be sure to include the braces ({}).
For example, to add the DebugEntry boot entry to the boot menu after the {current} entry, use the following command (remember to use '{guid}' in Windows PowerShell):
You can also use the options /addlast, /addfirst, and /remove to order and remove items from the menu. For example, the following command adds the DebugEntry boot entry as the last item on the menu:
Removing and deleting a boot entry
The following command removes the {49916baf-0e08-11db-9af4-000bdbd316a0} boot entry item from the boot menu.
When you remove the specified boot entry using the /displayorder and /remove options, the boot entry is removed from the boot menu, but it is still in the BCD store. To completely remove a boot loader entry from the boot menu and from the store, use the /delete option.
To verify that the display order is correct, use the following command:
When you type bcdedit without additional parameters, BCDEdit displays the boot manager entry and the boot loader entries in the order that they will appear in the menu.
The Windows Boot Manager entry also includes the boot menu display order, as the following example shows.
Get to Know What Boot Manager Is
Officially, Windows Boot Manager (BOOTMGR) is a small piece of software, called a boot manager. BOOTMGR is used to start your Windows 10, Windows 8, Windows 7, or Windows Vista operating system startup. You can select which operating system you would like the Windows to boot in the Boot menu. And also you can set the default boot entry so that the operating system will load what you prefer automatically.
'BOOTMGR is missing' is one of the common startup errors in Windows. Free internet tv no downloads. Sometimes it displays 'Couldn't find BOOTMGR', shortly after the computer is turned on. The possible reasons for BOOTMGR errors include corrupt and misconfigured files, hard drive and operating system upgrade issues, and outdated BIOS, damaged or loose hard drive interface cables, or your PC is trying to boot from a hard drive or flash drive that is not properly configured to be booted from.
Sometimes a simple Windows restart can fix the boot manager issues. Nevertheless, if this does not do the trick, a professional Windows boot fix tool is a good choice. Windows Boot Genius is the first PC utility aiming to diagnose and troubleshoot Windows boot manager problems and other Windows won't boot issues like booting failure, crash, freeze, black screen of death, or blue screen of death.
Part 1: How to Change Default Operating System to Run at Startup (Boot Manager) in Windows 10
When you dual-boot Windows 10 with an earlier versions of Windows like Windows 8.1, then you have 30 seconds to choose an operating system you wish to boot in before the default operating system runs automatically.
If you want to change the default boot and other boot options, just click Change defaults or choose other options to flip to Options window. Here you can change the timer, choose a default operating system to boot into and choose other operations.
Part 2: How to Use Windows Boot Genius to Fix Windows Boot Manager Errors and Other Windows Boot Issues
Windows Boot Genius is a comprehensive Windows tool with 4 built-in utilities:
Windows Rescue: Repair any booting problems on Windows 10/8.1/8/7/XP/Vista.
Password & Key Recovery: Reset or remove Windows login password (Microsoft account password).
Data Recovery: Retrieve data from internal/external disk due to accidental deletion, disk damage or formatting.
Disk Tools: Backup or restore disk or partition, partition managing and data wipe.
Following are instructions to fix Windows 10 BOOTMGR is missing error and other Windows boot issues. Before start, please download and install Windows Boot Genius to a workable computer.
Secure Download
Step 1: Firstly you need to create a bootable CD/DVD or USB flash drive. Insert a CD/DVD to CD-ROM drive on PC or connect a USB flash drive to computer. This software is integrated with an ISO file so that you can burn it to the CD/DVD/USB.
Step 2: Insert the burned bootable disk to the Windows 10 that you won’t boot successfully, and set BIOS (UEFI) to boot computer from CD/DVD/USB.
On Windows 10, just follow the steps below to enter BIOS (UEFI) setup.
Click Start menu and select Settings.
Choose Update and Security option>Recovery
Click Restart now under Advanced startup
Select Troubleshoot option
Select UEFI Firmware Settings
Click Restart to boot the computer in to UEFI (BIOS) screen.
Step 3: Once the computer boots from bootable disk successfully, you can see main interface of Windows Boot Genius. In Windows Rescue tab, there are Solution Center and Function Center.
If you are a newbie to Windows operating system and do not know the cause of the booting issue. In Solution Center it lists the manifestation of frequently encountered boot problems. Select one that suits your situation, you can follow the detailed instructions display on the right part within the program.
For advanced users, if you know what exactly caused the issue, just go to Function Center and choose corresponding tools to fix the problem.
Edit Bootmgr Windows 10
Windows 7 blue screen problem. With Windows Boot Genius, simply designed and with onscreen tips, you can handle any PC boot issues even you are a green hand.
Restore Windows 10 Boot Manager
In this article, we get to know what Windows Boot Manager is and how to do when BOOTMGR is missing. Windows Boot Genius is a versatile Windows rescue toolkit that you'll ever need.