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: 2nd Installed Harddrive identified by Windows 7 as "System Reserved"

09 Sep 2012   #1

Windows 7 64bit
2nd Installed Harddrive identified by Windows 7 as "System Reserved"

I purchased a new 1TB harddrive to host Windows 7. The installation was without any problem. Prior to installation, I removed all harddrives, including another 1TB data backup harddrive.

When I installed the second drive, with all my important backed up data, it comes identified by Windows 7 as drive D: System Reserved. There are no contents despite the properties indicating about 40% used space. Where did my data go? Please tell me it's not lost!! How can I get access to this drive??


Uploaded with

My System SpecsSystem Spec
09 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1

I'm assuming the old hard drive still has W7 installed on it?

If so the issue is that the old hard drive still has a Active partition on it. You should not have 2 Active partitions on one system, and that will caused these kinds of problems.

You can use a third party tool like Partition Wizard for bootable CD to remove the active flag from the old hard drive,
Free Partition Magic alternative, partition manager freeware, partition magic server, partition magic Windows 7 and free Partition Manager software for Windows 7/8/VISTA/XP/2000 and Windows Server 2003/2008/2000.

or you can use Diskpart
Partition - Mark as Inactive

Just to simplify things and avoid any problems you should disconnect all unnecessary drives while running Diskpart. You need to be able to select the correct drive from it's properties or partition sizes because normal drive identification will not be available.
My System SpecsSystem Spec
10 Sep 2012   #3

Win 7 Pro 64-bit 7601

could you post a slightly bigger screenshot? I have major issues trying to read text in that image.
My System SpecsSystem Spec
10 Sep 2012   #4

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1

"system reserved" normally doesn't have a drive letter. But what your looking for is on E or F.
system reserved on disk 0 (called D) can be deleted anyway!
My System SpecsSystem Spec

 2nd Installed Harddrive identified by Windows 7 as "System Reserved"

Thread Tools

Similar help and support threads for2: 2nd Installed Harddrive identified by Windows 7 as "System Reserved"
Thread Forum
Solved "System Reserved" - Options to Skip at installation or Create at 200MB Installation & Setup
Solved Windows 7 "System Reserved 100MB conflict"!!! Installation & Setup
Solved Both "System reserved" and "C" partition cloned to external HDD: boot? Installation & Setup
Installed SSD. Move "System Reserved" to SSD and make SSD boot? Installation & Setup
"System Reserved (C:)" and "Local Disk (D:)" ?? Installation & Setup
Problem XP sees Windows 7 "System Reserved" as C 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 13:30.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App