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: Missing Boot Manager

08 May 2012   #31
gregrocker

 

Looks like it might be an EFI installation on GPT disk.

Maybe the Linux tool you ran corrupted the data as you suspected, so that it is only showing in Recovery Wizard.

There is a recent thread where a data recovery software was able to recover the data (not partition structure) from a GPT disk. I'll try to find it or maybe someone else will link to it or recall the software.

Do you have your files backed up elsewhere? Because even if you can recover the data it will likely require a Clean Reinstall.

I would convert the HD to MBR to reinstall with EFI taken out of the BIOS boot order


My System SpecsSystem Spec
.
08 May 2012   #32
Mimalito

Windows 7 Home Premium X64 Service Pack 1
 
 

I decided to check out some of the other tools. I loaded up Diskgenius and looked at the partitions on that drive. I don't remember my exact steps but it scanned the drive and said it could write a new partition table (or some such terminology). It found that 100mb partition and it was set to active. It prompted me to save my new partition table. Asked if I wanted to do MBR or GPT. I chose MBR and restarted. Windows recovery started from the DVD and found my installation to repair. It repaired and restarted. Then Windows 7 started from my SATA drive! Everything seems to be intact.
My System SpecsSystem Spec
08 May 2012   #33
gregrocker

 

Great News! What caught your attention about that particular app on Hiren's Boot CD?

We will have to remember
Quote:
DiskGenius 3.2 Restore deleted partition, Rebuild MBR, Rebuild partition table, Recover files, Restore formatted partition, Backup files by partition, Disk clone, Backup partition table, Create/Delete/Format Partitions etc.
listed under Recovery Tools section.

Can you post back a Win7 Disk Mgmt screenshot now?
My System SpecsSystem Spec
.

08 May 2012   #34
Mimalito

Windows 7 Home Premium X64 Service Pack 1
 
 

I decided to give DiskGenius a shot because it mentioned "restore deleted partition" since Partition Wizard seemed to see my deleted/lost partitions but didn't seem to actually do anything about it. Maybe I was doing something wrong.. not sure. And I'd love to post a pic. Because after all is said and done I'd love you to look at my set up and see if it seems "back to normal" as far as a basic Win 7 install should. There is that odd bit of unallocated space but I don't know if it was there before or not. I've never actually used the disk management tools before today.


Attached Thumbnails
Missing Boot Manager-fixed.png  
My System SpecsSystem Spec
08 May 2012   #35
gregrocker

 

Attachment 210959This is really strange. It seems to have jettisoned the EFI partition which comes with an EFI install to GPT disk. The space is there but not the EFI partition, which I noticed was also missing in the PW Partition Recovery Wizard findings.

I am now wondering if it is still even a GPT disk or was rewritten by DiskGenius as an MBR disk.
My System SpecsSystem Spec
08 May 2012   #36
Mimalito

Windows 7 Home Premium X64 Service Pack 1
 
 

Well. DiskGenius did ask if I wanted to save it as MBR or GPT and I chose MBR. Don't know if it was the right choice but everything seems to be working.
My System SpecsSystem Spec
08 May 2012   #37
gregrocker

 

To find out in Disk Mgmt rightclick on Disk0 box highlighted in screenshot below, then select Properties, then the Volumes tab to see what format is:

Missing Boot Manager-capture.pngclick to enlarge


My System SpecsSystem Spec
08 May 2012   #38
Mimalito

Windows 7 Home Premium X64 Service Pack 1
 
 

And we have...


Attached Thumbnails
Missing Boot Manager-properties.png  
My System SpecsSystem Spec
09 May 2012   #39
gregrocker

 

That makes DiskGenius even more of a good find. I've already added it to Troubleshooting Windows 7 Failure to Boot. See if you think I placed it correctly in context for how it might work best as a last resort.

Nice work there. We all learned, and given the title countless others will find this via Google.

When ready you can mark the thread Solved at top.
My System SpecsSystem Spec
11 May 2012   #40
Mimalito

Windows 7 Home Premium X64 Service Pack 1
 
 

I think it fits in well where you put it. Thanks for all your suggestions. It's never as easy at it seems (or you want it to be) It was a lot of back and forth, a lot of picking through what works and what doesn't. And I'm sure those more savvy then me might find all the info they need in between my ineptitude.

I can happily say that not only does it boot but boots faster then it used to, noticeably.

I may have inadvertently flashed by bios trying something unrelated, but that's another questions for a different thread (or forum?)

Thanks again to forum member gregrocker
My System SpecsSystem Spec
Reply

 Missing Boot Manager




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Boot Manager is missing
Hi, I have gateway NV53 and has windows 7 x64 home premium 64 bit os installed in it. Last week I installed lenux ubuntu on the same machine with assigned 100 gb partition. After installing ubuntu I restarted my machine and message popped up saying bootmgr is missing. Tried few ways to get rid of...
Backup and Restore
Boot manager missing
Hello All, sda has three partitions. sda1, sda2, sda3. sda1 is the boot partition that windows creates. sda2 is where Windows, program files etc are. sda3 is for my personal data. something happened to Windows boot manager. The system would not boot (blank screen with a blinking...
Installation & Setup
Boot manager is missing
I have laptop HP IE windows 7 .. all I have is a black screen with boot manager is missing and underneath that is cetrl, altr, delet which I did and nothing happened . can somebody please help . thanks Roz
General Discussion
Boot Manager is missing.....
I have a blank laptop that im trying to install an OS onto. Im trying to run ubuntu 11.10 off a 2 gig thumb drive thats been converted as a bootable drive. when the laptop is turned on and it goes to load windows it tells me the boot manager is missing please press cntrl alt delete to restart....
Installation & Setup
Missing boot manager
When receiving this message on boot up attempt running windows 7 home premium on a dell 1545 laptop with a fresh install and new hard drive would the problem be hardware related or software? Any chance it could be hardware related to the motherboard or is it most likely software related to the OS...
General Discussion
XP + Seven: Boot Manager missing on XP
Hello all, I use XP on my machine with two 300 GB HDs configured as RAID1 (Nvidia NForce 570 SLI). There are two partitions C (100 GB) for system and D (remaining 200 GB) for data. All is working fine. Now I try to install Windows 7. First I resized D by 100 GB and installed W7 on this new...
Installation & Setup


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 09:03.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App