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 Question/Unable To Find System Disk

30 Jan 2012   #1
icednine

Windows 7
 
 
Dual Boot Question/Unable To Find System Disk

I currently have two separate hard drives in my home PC. My C: drive has Windows Vista on it and my X: drive has Windows 7 on it. The system is dual booted and if I choose either operating system, it boots fine to whichever OS I choose.

My issue is this: If I disconnect one of the drives (either one), I get an error after BIOS that it cannot find the system disk. I know which drive is C: vs. X: while looking inside my case.

My goal is to remove the drive with Vista on it to use in another PC (given drive prices are through the roof today). I just want to keep my drive with Windows 7 on it (currently labeled in the system as drive X).

Is there a way around this without having to format my drive (X) with Windows 7 on it AFTER I remove the C: drive with Vista on it?

Sorry if this all sounds confusing. Thanks in advance for the help.


My System SpecsSystem Spec
.

30 Jan 2012   #2
seavixen32

Windows 7 Ultimate SP1 64-Bit
 
 

Welcome to Windows Seven Forums.

A screenshot of your disk management layout would be a big help.

In the meantime I would have thought that carrying out a startup repair would sort out your boot problems.

Startup Repair - Run 3 Separate Times

In my humble opinion you probably have the boot files on the Vista drive so that when you disconnect it the computer is looking for your C drive - it can't find Windows 7 because you have it on the X drive.

When you've removed the Vista drive and got Windows 7 booting correctly, you need to change its drive letter to C.
My System SpecsSystem Spec
30 Jan 2012   #3
icednine

Windows 7
 
 

Thanks for the reply. Is it possible to change the drive letter without going into Windows or can I change it after booting in to Windows?
My System SpecsSystem Spec
.


30 Jan 2012   #4
gregrocker
Microsoft MVP

 
 

You cannot change an OS drive letter as it will ruin it in every case.

If Win7 is not C when booted it is because the installer was incorrectly run from Vista which blocked out the availability of the letter so that Win7 couldn't assume C whenever booted, as it does when it's installer is correctly booted.

If you need to remove Vista then we need to see the requested screenshot to advise you the exact steps as there are unknowns that need to be seen first. Use the Snipping Tool in Start menu, maximize Disk Mgmt, capture a rectangular snip of the drive map with listings, post back using Paper Clilp in reply box. Screen Shots
My System SpecsSystem Spec
30 Jan 2012   #5
icednine

Windows 7
 
 

Here you go:


Attached Thumbnails
Dual Boot Question/Unable To Find System Disk-capture.jpg  
My System SpecsSystem Spec
30 Jan 2012   #6
gregrocker
Microsoft MVP

 
 

You can Reinstall Windows 7 if it matters to you that it is not on C drive.

To remove Vista, mark Win7 partition Active: Partition - Mark as Active

Then power down, unplug Vista HD, swap its data cable to Win7 HD or enter BIOS setup to set Win7 HD first HD to boot, after DVD drive.

Next boot into Win7 DVD Repair console or System Repair Disk to run Startup Repair - Run 3 Separate Times until Win7 starts on its own.

You can then plug back in the old Vista HD, if you need to boot it use the one-time BIOS Boot Menu key. When ready to delete it use Diskpart Clean Command then repartition in Disk Management. Partition or Volume - Create New
My System SpecsSystem Spec
31 Jan 2012   #7
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Help me get windows 7 to boot (again)

Quote   Quote: Originally Posted by theog View Post
Attachment 168313



Physically disconnect the two Vista HD above.

Make the Win dows 7 HD, disk0 & first HD boot in BIOS.



Attachment 168310



Do a Startup Repair:

Startup Repair

Note: You may need to do startup repair 3 to 4 times.

Startup Repair - Run 3 Separate Times



Attachment 168311



When Windows is booting OK, Reconnect the other two Vista HD, as Disk1 & Disk2.

Attachment 168312

Mark all other HD Drive INACTIVE.
Partition - Mark as Inactive
My System SpecsSystem Spec
Reply

 Dual Boot Question/Unable To Find System Disk




Thread Tools





Similar help and support threads
Thread Forum
dual boot system (XP & Win 7-64) 7 reboot corrupts disk
Help! I have a dual boot system (XP & Win 7-64) with the Win 7 installed 2nd. I set it up to migrate away from XP. When I reboot the system from Win 7 it restarts and then immediately upon log-on I get a series of errors that the disk is corrupt (most applications trying to load & error 55 in...
General Discussion
Deleting XP from my dual boot system = question(s)
Hi Guys I now wish to delete WinXP from my dual boot system. I am confident that I can remove the XP partition using AOMEI partition assistant. HOWEVER - I am aware that if I do this, the win7 partition will not (of itself) be able to boot up? I believe I am correct in saying that my present...
Installation & Setup
Unable to access System Recovery in Boot Menu, and unable to boot disk
Win 7x64 Acer-5251 Everything seems to be working fine, but as the title suggests, when i tap F8 the Advanced boot options DO appear, but when i engage "Repair Windows" it just goes into a normal boot. Ive tried booting from my installation CD that i've purchased from Acer, but does nothing....
Installation & Setup
unable to find my all local disk partition?
i m using windows 7 and i m facing a very strange problem. I did some changes in my bios. actually i was trying to install windows xp from hard drive itself but nothing work so i switched it off.. then on next morning i run my computer and found that its not working and it was asking for repairing...
General Discussion
Unable to create/locate system partition.. Dual boot
I need to dual boot both 64 and 32bit windows 7.. I have a device that just will not work on 64bit.. So, I'm trying to put a 32bit install on a 50gb partition of one of my disks. However, when I go to select the partition, the install says Windows was unable to create a system partition or...
Installation & Setup
Windows 7 Ult 32b boot failure; system repair unable to find install
In an attempt to remove a virus, I made some changes to my registry (after saving a backup of it) using CCleaner. Upon restart, my computer failed to boot; the windows logo appeared for a few seconds, as usual, then a blue error screen flashed, and before I could read it the system restarted. Now...
BSOD Help and Support

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 21:48.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App