Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Bootmgr is missing error after changing partition drives Need Help!!

09 Oct 2013   #1

Windows 7 Home Premium
Bootmgr is missing error after changing partition drives Need Help!!

Hi, i'm new here and I made an account for the sole purpose of getting help on this situation i'm having right now. Yesterday, I wanted to delete my system reserved partition and I followed a guide to do so but I ended up messing up my partitions. I got the Bootmgr error when I would try and boot up, so I looked for solutions on solving this issue but I have no luck yet. I tried the Windows 7 recovery disc recovery options (startup repair and command prompt) and I tried to change the boot order in the bios but to no avail did it help. One thing I should note is i'm able to successfully boot up from the Windows installation disc but I cannot boot up from my SSD because I messed up the partitions status's Does anyone know how I can reverse this so I can boot up from my SSD instead of my disc everytime? One more thing I should say is I have a second hard drive, a mechanical 2 TB one, and I think I messed up something on that too.

My System SpecsSystem Spec
09 Oct 2013   #2
Microsoft MVP


You'd never want to delete or mess with the System Reserved partition since it boots Windows, not until it has its System Active flags moved to C first so that C can boot itself. Here's how, so you can see if it can still be done:

Unplug all other HD's except WIn7 HD.

Mark C Partition Active (Option Two) then run Startup Repair - Run 3 Separate Times until Win7 starts and C partition holds the System Active flags.

The System REserved partition can now be deleted and recovered if desired using Partition Wizard Resize Partition - Video Help.

If that fails, mark the System Reserved partition Active and try the Startup Repairs to revive it - if necessary recreate the partition using the Win7 installer Drive Options shown in Steps 7 and 8 of Clean Install Windows 7, use Diskpart to mark it Active then run the 3 repairs.

When you plug back in other HD's make sure Win7 HD remains set first HD to boot in BIOS setup, no other partition is marked Active except C. Partition - Mark as Inactive
My System SpecsSystem Spec

 Bootmgr is missing error after changing partition drives Need Help!!

Thread Tools

Similar help and support threads
Thread Forum
BOOTMGR is missing after setting new partition active
Ok, i screwed up bad. I didnt know what i was doing i guess. Now, i cant get into the computer, and i have no recovery cd, or windows cd they got lost. What can i do? Also, my next door neighbor dvd burner does not work. Is there anything i can do? I thought i could go into command promt by...
Installation & Setup
Cannot Boot to Windows/ BOOTMGR Missing/ Partition problem
Ok... so i cannot boot my Windows 7 64 bit Dell Studio 1558. Problem :: Cannot boot to Windows. Error(s) :: BOOTMGR IS MISSING , CTRL + ALT + DEL TO RESTART Description :: 1. Initally had two partitions .. C and D .. 2. Tried to merge C and D to make C more by using Partiton Wizard. 3....
BSOD Help and Support
Deleted partition and new HDD -> BOOTMGR is missing
Hi guys and gilrs, Yesterday I bought a new 1.5TB hdd and decided to make from it one new partition called "X:". My old hdd was 150GB(separated into "C:" and "D:"), so I deleted "D:" and expanded my "C:" with the unallocated memory from the deleted partition and formated the new expanded "C:"....
Installation & Setup
bootmgr missing error, became bootmgr MISSING.
I compressed my entire C drive. When I rebooted I got the error "Bootmgr is compressed" I don't have a optical drive, so I made a bootable USB drive using YUMI 0.2.3 and added the windows 7 recovery ISO. The USB drive boots and I can enter the recovery console, etc. It couldn't auto-repair...
General Discussion
bootmgr is missing error
Im stuck on step 5 theres no OS to choose from and i cant do a start up repair cuz it says i cannot repair automatically. Ive done it like 20 times now to. Also i cant reinstall windows 7 because my drive wont show when it asks me which drive i want to install it on.
BSOD Help and Support

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 04:51.
Twitter Facebook Google+