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Windows 7: Visible Windows 7 System Reserved Drive


04 Jan 2010   #1

Windows 7
 
 
Visible Windows 7 System Reserved Drive

I recently installed Windows 7 on two PCs. The first PC had two 500GB drives and I did a clean install of Home Premium. There was a previous Vista installation on the C drive but during the install process I reformatted both drives. Everything went as expected.

The second PC had two 1TB drives and I also did a clean install but these were brand new drives with no prior OS on them. This time I used Windows 7 Professional. the installation went fine but there was an unusual result. The two 1TB drives showed up as Drive C and E. Drive D is visible and is System Reserved and uses 71.8 of 99.9MB.

I seem to recall that Windows 7 reserves this space, but why does it show up as a separate drive on one machine but not on the other? Is this a function of Professional vs. Home Premium? Is it a function of the install process I used?

Is there any way to hide the drive and delete its drive letter?

BTW, Drive F is my DVD.

Thanks!

My System SpecsSystem Spec
.

04 Jan 2010   #2

Windows 7
 
 

I forgot to add that the Windows 7 Professional installation was 64 bit and the Home Premium was 32 bit.
My System SpecsSystem Spec
04 Jan 2010   #3

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Howard08560 View Post
I recently installed Windows 7 on two PCs. The first PC had two 500GB drives and I did a clean install of Home Premium. There was a previous Vista installation on the C drive but during the install process I reformatted both drives. Everything went as expected.

The second PC had two 1TB drives and I also did a clean install but these were brand new drives with no prior OS on them. This time I used Windows 7 Professional. the installation went fine but there was an unusual result. The two 1TB drives showed up as Drive C and E. Drive D is visible and is System Reserved and uses 71.8 of 99.9MB.

I seem to recall that Windows 7 reserves this space, but why does it show up as a separate drive on one machine but not on the other? Is this a function of Professional vs. Home Premium? Is it a function of the install process I used?

Is there any way to hide the drive and delete its drive letter?

BTW, Drive F is my DVD.

Thanks!
Professional and ultimate have bitlocker encryption,thats the extra 100mb.

Go to control panel>admin tools>computer management>disc management>right click the 100mb>change drive letter>delete the drive letter from the window.

If you do this you cannot run files from here,i.e
bitlocker.
My System SpecsSystem Spec
.


04 Jan 2010   #4

Windows 7
 
 

I knew about the 100mb reserved space, but is it supposed to be a visible or hidden drive?
My System SpecsSystem Spec
04 Jan 2010   #5

Windows 7 Ultimate 64bit
 
 

Quote   Quote: Originally Posted by Howard08560 View Post
I knew about the 100mb reserved space, but is it supposed to be a visible or hidden drive?
It should be hidden yes.
My System SpecsSystem Spec
04 Jan 2010   #6

Windows 7
 
 

Any idea why mine is visible and how I can hide it and reclaim my drive letter?

My boot drive is Disk 0 and Drive C is on that disk.

The reserved partition is Drive D on Disk 1, and it shares space with Drive E on Disk 1.
My System SpecsSystem Spec
04 Jan 2010   #7
Microsoft MVP

 

Can you post back a screenshot of your full Disk Management drive map, using SNipping tool in Start Menu and attaching file using paper clip in reply box?

This sounds unusual. We only assign 100mb a letter if it isn't recognized in a dual boot. Splitting it between HD's also could be problematic if that's indeed the case.

I just checked my 100mb and it has a letter, but I added it for some other reason I can't remember now.

Incidentally, that 100mb also conveniently puts your Repair console available by tapping F8 at bootup. Nevertheless, it can be removed if you want and recovered into the Windows 7 partition.
My System SpecsSystem Spec
04 Jan 2010   #8

Windows 7
 
 

Here are screenshots of my disk map and Windows Explorer

Visible Windows 7 System Reserved Drive-disk-management.png
Visible Windows 7 System Reserved Drive-windows-explorer-drives.png


My System SpecsSystem Spec
04 Jan 2010   #9
Microsoft MVP

 

How very strange and annoying, if only because it makes the two drives interdependent for no good reason.

Did installer offer the 100mb on DISK1, then you formatted DISK0 for install?

I'm not sure about copying the 100mb onto DISK0 using Partition WIzard CD after making space at the first of that HD. You'd still have to recover the MBR back into it after copying, so might as well just delete it and recover the MBR into C if you are of that mind.

The 100mb Sys Reserved partition is for Bitlocker Encryption in Ultimate and conveniently puts the Repair console available by tapping F8 at bootup. You decide if that's enough reason to keep it.
My System SpecsSystem Spec
04 Jan 2010   #10

Windows 7
 
 

These were both brand new Seagate 1TB drives prior to install. During the installation process I booted from the Windows 7 CD and proceeded to install from there.

During the disk selection phase of the installation process it is likely that I requested both drives to be formatted and then to have Windows 7 installed on Disk 0. Is it possible that if Disk 1 was formatted first that the Reserved System Drive would be placed there instead of on Disk 0 with the OS? Would that also account for it being visible since it is not on the same drive as the OS?
My System SpecsSystem Spec
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 Visible Windows 7 System Reserved Drive




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