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: No Default Operating System in Startup and Recovery dialog Win 7

30 Dec 2011   #11

Win 7 64

Me too! :)

One question... in looking at the optimize disk tutorial, I was wondering if in my case I can just use the standard Win 7 install GUI or should I do it in Diskpart before I do the install? I don't have a lot of working knowledge on disks so I suspect the default options are better than my best guess.

I have 1 900G onboard drive

My requirements
I don't need to multi-boot
I don't need to conserve storage space
No bit locker

Something like this feels about right

200G System Reserved Partition (not sure why I need it but it seems like I might)
100G Win 7 system partition (as suggested) Where I would install Windows
600G Data partition

Make sense?

My System SpecsSystem Spec
30 Dec 2011   #12

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit

200 GB system reserved is not needed at all .... 100 MB is necessary and sufficient for it . Dont need to block so much extra space completely unnecessary .

In the Clean Install Windows 7 , when you are on step 8, click on "new" to make a new partition , give the size 102500 MB , make a partition . Use the rest for another partition.

Now, when you select the 102500 MB partition for windows installation, accept the formatting of the partition, it will automatically split up the space into two... one is 100 MB system reserved (The primary system and active partition, without any drive letter; containing the MBR) and the rest is as C , of 102400 MB=100 GB .

So, if you think, you may drop the SSD / HDD : Optimize for Windows Reinstallation step .
My System SpecsSystem Spec
30 Dec 2011   #13

Win 7 64

My System SpecsSystem Spec

30 Dec 2011   #14
Microsoft MVP


I just boot the installer, choose Custom install and click Next which will create and format the partition along with harmless 100mb System Reserved partition effortlessly. If you already know you want a second data partition you can use Drive Options to partition accordingly.

Clean All is only necessary to securely overwrite data to make it nearly impossible to recover. There is nothing about Clean All that is beneficial installation-wise that the simple Clean command will not handle, since the issue if there is one is wiping the boot sector which either Clean All or Clean does.
My System SpecsSystem Spec
30 Dec 2011   #15

Win 7 64

Thanks for all the help guys... clean Win 7 with updates streaming in as I type.

Today is a much better day....
My System SpecsSystem Spec
01 Jan 2012   #16

Win 7 64

Hey guys-
All smooth but strange behavior on some USB attached drives. No files show up when you open the drive but when you do a virus check on the drive, you can see it checking the filles (I can see the file names I expect)

The disk properties show the correct used and free space %s

They were attached to the machine that had the virus so I'm thinking a master record of some kind was changed. Any ideas on how to a) check the disk to be sure there is nothing hiding b)get the files back?

Thanks... and Happy New Year.
My System SpecsSystem Spec
01 Jan 2012   #17
Microsoft MVP


Take ownership of the drive: Take Ownership Shortcut

Run a Disk Check on the drive from Win7, or if it doesn't show up in Computer, from free Partition Wizard
which can often see it when Windows cannot. I had an external recently spring to life with an Autostart box during PW File System check.
My System SpecsSystem Spec
02 Jan 2012   #18

Win 7 64

Determined that the hidden bit was set and the file owneship data was hijacked. Great opportunity to re-learn about ownership and cascading permissions. :)
My System SpecsSystem Spec
02 Jan 2012   #19
Microsoft MVP


Good work.
My System SpecsSystem Spec

 No Default Operating System in Startup and Recovery dialog Win 7

Thread Tools

Similar help and support threads
Thread Forum
Default Operating System - Change Default Boot OS
How to Change the Default Operating System to Start in Windows 7 and Vista If you dual boot with one or more operating systems installed other than Windows 7 or Vista, then this will show you how to change the default operating system to start in the Windows Boot Manager. You must be logged...
Windows Default system/dialog font changed - very tiny
Hello, all. I'm hoping someone can help with this. I've seen it posted elsewhere, and have been through all the steps to resolve, but nothing has worked so far, or has worked piecemeal. Yesterday I cleaned some house and uninstalled some programs that I haven't used in years. That's the only...
Operating system does not show up in System Recovery Options
Hey guys. I have an Acer laptop with Windows 7 that has crashed and will not boot. I do not have a Windows 7 CD nor do I have the money to pay for one. When my computer boots up, it says "BOOTMGR IS MISSING" and I press Ctrl+Alt+Delete and it loops back around to that page. I created a System...
General Discussion
No Default Operating System
I have an Asus K60I, and when I start it up, a message appears telling me to choose an operating system, and gives me two choices... 1)Boot Client OS 2)Boot MRI PE When I go to advanced system settings -> startup and recovery-> there is nothing listed under Default operating system, and...
General Discussion
operating system not found - recovery
I shrinked my hdd today because I was going to setup a 3rd os on my new dell laptop. After rebooting it said that the os was not found which is fine because my dell has a recovery partition. I tried to boot to that but couldn't because what Im finding out is that the MBR needs to be in tact to be...
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 22:54.
Twitter Facebook Google+