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Questions tagged [bootmgr]

The Windows Boot Manager (BOOTMGR) is the bootloader launched by the BIOS or UEFI and is responsible for loading the rest of Windows.

86 questions
19
votes
8 answers

BootMgr is missing, usual fixes don't work

I know this question has been asked before but I've tried all the usual fixes and nothing works. Basically the hard drive had two partitions with Vista and Windows 7. I've deleted the Vista partition to make more room and expanded the Windows 7…
parsley72
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18
votes
6 answers

Tools to modify UEFI Variables in Windows/Linux?

I have a DELL machine that use Phoenix SecureCore Tiano as its UEFI/BIOS However, it is totally not configurable as its UEFI shell & menus are hidden in BIOS Setup. I'm wondering if there were tools that can modify the UEFI settings(such as Boot…
marstone
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14
votes
1 answer

Multiple Windows installers on a USB stick

I've recently got my hands on one of those SanDisk Extreme 64GB sticks and started tinkering with it. During this story, please keep in mind that this is a model where removable bit is set to 0 (which means Windows sees all its partitons by default…
Gear54rus
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7
votes
4 answers

bootmgr image is corrupt

I just replaced my hard drive with a SSD. I did a brand new install on the SSD and I received the following error after booting BOOTMGR image is corrupt. The system cannot boot. A little configuration for your knowledge. The system used to be a…
bacord
  • 233
5
votes
1 answer

Troubleshooting error 0xc000000e on Windows boot with Bitlocker full drive encryption

Note: I had originally thought that the BCD was the problem, which turned out to be wrong. I originally had my laptop set up as follows: A 300 GB partition with OS X 10.10 and native full-drive encryption (FileVault). A 200 GB partition with…
Siguza
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5
votes
1 answer

How to fix Windows 8 boot manager?

Since I have no CD-ROM this is what I did to install Win8: created a partition X: (NTFS) and set it as the ACTIVE ONE, then put the Windows 8 installation files there opened command prompt and entered bootsect.exe /n60 X: restarted my computer,…
Hultramann
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4
votes
1 answer

How does Windows Vista/7/2008 bootmgr work behind the scene?

It always used to be possible to transfer a Windows installation (NT/2000/XP/2003) to a new boot medium by: Recreating the partition table and MBR Copying the partitions using ntfsclone Tricky part: The disk geometry had to remain the same and the…
edgar.holleis
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4
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2 answers

How to install Windows 7 Bootmgr on second disk

I have Windows XP installed on one drive, and have just installed Windows 7 on another. I can boot into either thanks to the boot menu. However, if I unplug the XP drive, Windows 7 fails to boot. The boot menu is installed on the first drive. The…
Matt Connolly
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4
votes
2 answers

Do bootloaders keep running?

In this question, I'm considering both Windows (BOOTMGR) and Linux (GRUB) bootloaders as well as BIOS and EFI modes. Once a bootloader has invoked a kernel, does the bootloader keep running in any sort of way or does it die being replaced by the OS…
xendi
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4
votes
3 answers

Windows moved the bootloader to another drive

I have a dual boot install. I first installed Windows 7 in its own disk (C:) with the secondary drive disconnected. I did this because I know Windows has a tendency to mess with other drives. Then I connected a secondary drive and created a data…
Mister Smith
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4
votes
3 answers

How does the Windows Boot Manager locate the BCD?

I am trying to understand the Windows boot process. I got as far as the EFI boot manager loading the Windows Boot Manager. But then it must access the BCD in order to proceed further with loading the OS or chainloading the next boot manager. How…
Sergei Tachenov
  • 191
3
votes
1 answer

UEFI detection (ESPs)

Does the UEFI boot manager detect the ESPs inside the GPTs on every storage device, based on the global-scope variables (boot-configuration) stored in NVRAM? Reading the UEFI booting from Wikipedia: Unlike BIOS, UEFI does not rely on a boot…
Jordan Davis
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3
votes
1 answer

Bootloader issue - How do I completely remove Linux from my system? fully detailed description

The goal was to successfully install Windows 10 upgrade. System configuration : Dell Inspiron 3537, i5 4th gen processor, 6GB RAM, 1TB HDD, 2GB AMD Graphics. Before install : I have a Dual-boot system with Ubuntu GNOME alongside my genuine…
RGTest
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3
votes
2 answers

WIndows 7 Installation shows Error Bootmgr not found. Press alt+ctrl+del to restart

I have a Lenovo laptop, when I turn it on, it gives me a black screen with a message saying "BOOTMGR is missing press ctrl+alt+del to restart". And I did it for many times but it did not solve the problem, I even tried to Google the problem and the…
Abdul Rafi
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3
votes
5 answers

Chainload Windows boot manager from another?

Is it possible to use the Windows Boot Manager to chainload another Windows Boot Manager? For example, (how) can I use a boot manager on C:\bootmgr that reads C:\boot\BCD to chainload another boot manager D:\bootmgr that uses D:\boot\BCD?
user541686
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