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: Dual boot disappears after install

21 Jan 2013   #1

Windows 7 ultimate
Dual boot disappears after install

I have Windows 7 ultimate, I installed Windows 8 Enterprise on the partition. The installation went well, I was able to boot into Windows 8. I changed the primary boot OS to Windows 7, when I restarted my PC, the dual boot has disappeared. Windows boots straight into windows 7. I used msconfig to check the boot options, I can still see both windows 7 and 8 in there with Windows 7 as the default OS.

So I deleted the partition where Win8 is installed, recreated and formatted it. Re-installed Win8. I still get the same issue. Dual boot disappears after the first reboot.Does anyone have any idea what could be happening?

My System SpecsSystem Spec

21 Jan 2013   #2
Microsoft MVP


How are you activating Enterprise? It's meant for volume licensing in a business or organizational environment, usually adminstered by IT support.

If you are using trial or have it activated by your support then install EasyBCD to the OS marked System active in Disk Mgmt, add the other one to a Dual Boot Menu: EasyBCD (click Download - no Name or Email required)

For any questions post back a screenshot of your maximized Disk Mgmt drive map with listings. Disk Management - Post a Screen Capture Image
My System SpecsSystem Spec
22 Jan 2013   #3

Windows 7 ultimate

I have attached a screenshot of disk mmngt

Attached Thumbnails
Dual boot disappears after install-diskman.jpg  
My System SpecsSystem Spec

22 Jan 2013   #4
Microsoft MVP


Active flag is on System Reserved which is no longer booting the system as shown by the System flag being on C. So System Reserved should not be marked Active. Try moving the Active flag to C where it belongs now that it holds the System flag and boot files.

If that isn't enough then install EasyBCD (click Download - no Name or Email required) to C, click Edit the OS menu to Delete any other entry besides C, the Add the other OS by unique name, type and drive letter.

If this doesnt work we can try to revive the System Reserved partition to boot E as it was intended when it was installed but somehow had its boot files and System flag to C.

It is very unusual for a System Reserved partition to be installed when there is already a System partition. It is even more unusual for it to have its boot files moved to C while still remaining Active. What did you do?
My System SpecsSystem Spec
23 Jan 2013   #5

Windows 7 ultimate

Thanks a lot. EasyBCD worked though I had to re-install windows 8
My System SpecsSystem Spec

 Dual boot disappears after install

Thread Tools

Similar help and support threads for2: Dual boot disappears after install
Thread Forum
Solved Screwed up XP dual-boot install, now can't boot Vista Installation & Setup
Dual boot - XP won't install Installation & Setup
How install Dual Boot after Win 7 has been installed Installation & Setup
How to install RTM over RC/XP dual-boot? Installation & Setup
XP dual boot install issues Installation & Setup
Dual boot: Install XP AFTER W7 Installation & Setup
Dual Boot Install General Discussion

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 11:09 PM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33