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Windows 7: BOOTMGR missing, made a mistake with partitions

07 Apr 2012   #1
Johnny Bravo

Windows 7 home basic
BOOTMGR missing, made a mistake with partitions

I was resizing some partitions on my laptop running win 7 when I set the c: drive to active. I got a warning that the partition should have an OS on it and so I thought there wouldn't be a problem. Well when I reboot, I get "BOOTMGR missing" and I can't boot. I think the boot manager was on another partition.

So how do I fix this? I don't have a rescue disk and I did not received the win 7 dvd when I got this laptop.

My System SpecsSystem Spec
07 Apr 2012   #2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

You need to set the correct partition active again.

If you have a 1oomb partition that will probably be it.

Oem's will sometimes have set on of their recovery partitions active.

Get a boot disc of some kind - partition wizard free boot disc will do Partition Wizard Bootable CD allows user to manage partition ...
My System SpecsSystem Spec
07 Apr 2012   #3

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1

How many partitions do you have? What partition was active?
On what machine you're working now is that also win7? same version as non booting machine (so 32 or 64 bits)?
My System SpecsSystem Spec

07 Apr 2012   #4
Johnny Bravo

Windows 7 home basic

I'm using my PC which runs on Winxp. The laptop has 4 partitions, and I made c: active. yeah I guess the boot manager is on the other partition (smaller, "hidden" one). Sorry, I'm not that tech savvy

can I run the MiniTool Partition Wizard on a USB flash drive? The DVD burner on my PC isn't working
My System SpecsSystem Spec
14 Apr 2012   #5

Windows 7 Home Premium 64 Bit

The following link may help to get an ISO onto a USB flash drive: How to create bootable USB from an ISO image

Here is one from our forums: Boot Windows 7 System Repair Disc from USB Using Grub4Dos (the idea is the same, just for a different ISO than the rescue disc).

Do you still need help with this problem?
My System SpecsSystem Spec

 BOOTMGR missing, made a mistake with partitions

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