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Windows 7: Windows Boot Manager - Delete a Listed Operating System


17 Jan 2009   #29
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 
Windows Boot Manager - Delete a Listed Operating System

How to Delete an Operating System Listed in Windows Boot Manager


...

My System SpecsSystem Spec
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22 Mar 2010   #30
Lanthus20

Windows 7 Ultimate 32 bit
 
 

thanks!

So should I do this before or after deleting the old partition?

My System SpecsSystem Spec
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22 Mar 2010   #31
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Lanthus,

It doesn't matter. You can do it before or after.
My System SpecsSystem Spec
12 Apr 2010   #32
not so gray matter

W7 Ult. x64 | OS X
 
 
Boot Options - Remove Manually

How to Remove a Boot Choice via Command Prompt

information   Information
This tutorial will show you how to remove a boot choice when you cannot use a program such as EasyBCD. It's quite simply, but when changing major system settings a backup is always recommend.


warning   Warning
Please note that deleting the wrong boot menu can cause your computer to become unbootable. The only way to rectify this is via the original Windows DVD or recovery disk.


1. - Start an elevated command prompt:
Start > Search for "cmd" > Right click CMD.exe > Run as Administrator

Name:  bootmenu1.png
Views: 1556
Size:  8.0 KB


2. - Run this command:
bcdedit /enum

Name:  bootmenu2.png
Views: 323
Size:  16.6 KB


3. - In the results from the last command, find the identifier for the boot option you wish to delete.
Name:  bootmenu3.png
Views: 329
Size:  16.6 KB


4. - Replace {identifier} with that identifier in the following command:
bcdedit /delete {identifier}

Name:  bootmenu4.png
Views: 321
Size:  14.7 KB

Tip   Tip
If you wish to explore bcdedit more use this command:
bcdedit /?


My System SpecsSystem Spec
13 Apr 2010   #33
adamrich

windows 7
 
 

Thanks notsograymatter. That worked perfectly!
My System SpecsSystem Spec
16 Apr 2010   #34
parsec

Windows 7
 
 

Thought my dumb actions I wound up with two windows 7 o/s on my machine. I did the best to delete the one I don't want, and machine will no longer boot to that one, however, how do I remove the option to select the os under windows boot manager. I tried the above, but the one I want to remove does not allow me to select delete. Both are listed as Windows 7, one (the one I want to use) is listed as default, and the one I'm trying to get rid of is listed as operating, although its not actually....Any suggestions on what to do to get the one I want to delete from the menu to offer me the delete option??? Any other way to get rid of it short of reformatting my system. There are years worth of information on my various hard drives, and I don't want to lose them, or the myriad of programs I have loaded....
My System SpecsSystem Spec
16 Apr 2010   #35
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Parsec, and welcome to Seven Forums.

Yep, it sounds like you deleted the wrong one. Try running a startup repair to see if it will add the correct boot entry for the one you still have installed back for you. You may need to run it a couple of times though.

Hope this helps,
Shawn
My System SpecsSystem Spec
19 Oct 2010   #36
thesosman

Win 7 Pro 32-bit
 
 
What about removing the OS

Very good Shawn. But how do you locate and remove the OS you deleted the pointer to and recover all that space. Thanx in advance!!
My System SpecsSystem Spec
19 Oct 2010   #37
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello Thesosman, and welcome to Seven Forums.

It depends on if the OS you removed from the Windows Boot Manager screen is the one you installed first or not, and if it's the boot partition.

If not, then you could usually just delete the partition that OS is on to be unallocated space and extend the other partition into it.

If it is, then please post back a screenshot of your Disk Management (diskmgmt.msc) showing all of your drives layout, and what OS was removed from the list.

Hope this helps,
Shawn
My System SpecsSystem Spec
16 Jul 2012   #38
WildChaos

Windows 7 ultimate x86
 
 
Delete OS on List at Boot

Thanks mate, really useful information you've got there
My System SpecsSystem Spec
16 Jul 2012   #39
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

You're most welcome WildChaos, and welcome to Seven Forums.
My System SpecsSystem Spec
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 Windows Boot Manager - Delete a Listed Operating System




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