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: Set blank partition to active primary on accident, now won't boot.

07 Jun 2012   #1

Dual boot win 7 and xp
Set blank partition to active primary on accident, now won't boot.

I just bought a cheap laptop from Walmart yesterday with windows 7. I am not a fan of it so I wanted to see if I could dual boot windows xp. Luckly it is a IDE machine not sata. So I Downloaded a copy of windows xp (I have a license key for all the people who would shun me for it, it is paid for). Well when I was making a new partition to install windows xp on I set the new partition to active, rebooted and wala, my computer won't boot because I'm a bone head sometimes. I have access to another windows 7 comp that is Extremly slow and I put emphasis on Extremly. What is the quickest most direct path I can take to get my comp booting again. Other comp has a cd burner and I have an external hd if I need it.

My System SpecsSystem Spec
07 Jun 2012   #2

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64

Obviously, you need to move the Active flag back to the original volume.

You can do that if you attach your other comp to it so you can see the volume - then use disk mgmt or diskpart, or any partition manager to do the job.

Otherwise, you will need to get something that you can boot on your sick comp - PW free cd is pretty good.

Partition Wizard Bootable CD allows user to manage partition directly with partition manager bootable CD.
My System SpecsSystem Spec
07 Jun 2012   #3

Win7 Home Premium 64x

The computer should, if it didn't come with any disks, have a recovery partition set up.
So, First try to get to the Advanced Options Menu:

If you can't get to anything there, you will need a boot disk to launch the Windows 7 recovery options:

> If you have another computer with Win7 then you can create a System Recovery disk:

> if you don't have access to a win7 computer, but can create a disk on another, you can download a copy of win7 and go through the steps to repair from that disk:

From those, you can run the Startup Repair.

Or use the C Prompt to reset the Original Partition to active:

Hope this helps
My System SpecsSystem Spec

07 Jun 2012   #4

Dual boot win 7 and xp

Thanks Thorsen and SIW. The bootable CD partition wizard is what im looking for sounds like.
My System SpecsSystem Spec
07 Jun 2012   #5
Microsoft MVP


If you're going to install XP then Win7 will lose the boot anyway, until you repair it to start 7 up to add XP to a Dual Boot menu. So you might as well install XP to a partition your shrink using Partition Wizard CD first.

Follow the steps in Option Two here: Dual Boot Installation with Windows 7 and XP

If this fails use PW CD to mark Win7 Active, then from the Win7 DVD or Repair CD run Startup Repair - Run 3 Separate Times. You can download the Win7 DVD official ISO and burn to DVD using steps 1 and 2 here.
My System SpecsSystem Spec

 Set blank partition to active primary on accident, now won't boot.

Thread Tools

Similar help and support threads
Thread Forum
Delete "System, Active, Primary Partition" in Windows7
Hello guys, This is my situation - I have got a computer which previously was used by some other user. While looking through the system, I see the OS is installed in C drive, while I can also see there is a 'Windows' folder in D drive too, which makes me believe that at some point of time there...
General Discussion
Primary & Active Partition were blank
So I am trying to install the Windows 10 preview image and I partitioned my hard drive. I previously was dual booting W7 and W8.1. I deleted the W7 partition and formatted it and it was set as the active partiton and primary partition. The W8.1 partition is still there but it isn't the primary one....
General Discussion
Partition Manager. Primary Boot Partition as Secondary Drive.
I loaded a hard disk formatted as a Windows Primary Disk onto my SATA controller. The BIOS sees the disk. In this case I want to load the new disk as a secondary drive (of course I have booted with a different hard disk). I load the Partition Manager and inside I find that the partition manger does...
Hardware & Devices
c: Health (Boot, Page File, Active, Crash Dump, Primary Partition)
Can anyone help me with my problem please
Hardware & Devices
How to Recover a Primary Boot Partition
Hello, I have Windows XP64 and XP 2005 installed on adjacent partitions on an 80 GB IDE hard drive. I had been accustomed to using BIOS to choose the drive and EasyBCD to choose the OS. A few days ago I was unable to boot into this drive because I kept getting the error "NTLDR missing (press...
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 07:13.
Twitter Facebook Google+