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: Changing drive letter back to c:\

17 Aug 2009   #11
mickey megabyte

ultimate 64 sp1

Quote   Quote: Originally Posted by Muad Dib View Post
You mean using 240 AC is not what they mean by increasing the RAM voltages?

Dang it, I knew there was a trick to it! I better go and change that post I made in another forum...
dang! and i've just paid good money for this!

Attached Thumbnails
Changing drive letter back to c:\-22012009434.jpg  
My System SpecsSystem Spec
17 Aug 2009   #12


Quote   Quote: Originally Posted by mickey megabyte View Post
dang! and i've just paid good money for this!
Petrossa Brand.
My System SpecsSystem Spec
19 Aug 2009   #13

XP_Pro, W7_7201, W7RC.vhd, SciLinux5.3, Fedora12, Fedora9_2x, OpenSolaris_09-06

Quote   Quote: Originally Posted by squonksc View Post
@ OP and ChuckR,

My advise to not do it, is not based on a guess.

I have tried it a few times on different OS's just for the fun of finding out if it could be done.

I even had the tools to go through registry and automatically change all instances of d: to c:

But there are a lot of registry pointers in hex numbers, and all kind of other numbered references that represent the bootdisk.

A lot of apps use ini files with references.
You would have to go through those also.

But before I ever got to the point of changing everything, my OS would go into all kinds of BSOD and errors.
I never made it through without wrecking my OS.

Is it impossible? No, probably not.
Is it worth the trouble? Definitely not!
Thanks for the post - must have missed it somehow...

To me, its now a question of "How does he do that?"

Personally, I would also just leave it as it is, without 'trying' anything.

But now, given the situation and the 'facts', it just makes me wonder what the heck is going on here...

One partition, Win 7 calls everyplace he's booted from as "C:" (even if XP calls it "R:"), etc. And Win 7 uses "D:"

Things don't 'jive' in my mind, so it would be interesting to try to understand whatever 'mechanism' he's operating under...

(Another M$ 'Unsolved mystery', I guess!)
Technet might have a blurb somewhere, regarding this, but I'm not gonna chase it down (not too soon, anyway)...
My System SpecsSystem Spec

11 Dec 2013   #14

Windows 7 64

Hey, just wanted to add a solution to this problem, since this post is one of the top google search results. I know it's an old thread, but people will see it, and it may be useful to someone.

I had to change the drive letter back to C after reinstalling windows and finding that some essential drivers assume the drive letter is C and therefore can never be installed. There is a super easy solution, and you can effectively change the drive letter back to C after reinstalling windows or whatever. Just create a symbolic link.

Right click My Computer, go to Computer Management, shrink a drive down 8MB, and create a new drive C:/.

Then just open the command prompt as administrator (type cmd into start menu, right click run as administrator), and and type commands like this, as necessary.

mklink /J "C:\Program Files" "D:\Program Files"
mklink /J "C:\Program Files (x86)" "D:\Program Files (x86)"
mklink /J "C:\Users" "D:\Users"
mklink /J "C:\Windows" "D:\Windows"

Sadly, it appears that it is not possible to go directly from D to C, but this will fix any program installation issues and works for all practical purposes. But at least this works immediately with no effort or risk.
My System SpecsSystem Spec

 Changing drive letter back to c:\

Thread Tools

Similar help and support threads
Thread Forum
Changing drive letter
Hello I "reorganized" my Windows 7-64 bits PC (added some new disks, reorgabizing directories ...) I renamed some of the disks so they are clear for me But there is one disk I cannot change I want to rename F: to Z: Inside the Drive management Console, i can - access disk F: - select...
Hardware & Devices
changing one drive letter all 3 partitions change to that drive letter
sir, i have windows 7 desktop. there are some partition on it.but there is problem with these partition. All the three partition have the same drive letter.i attach a link showing the picture. all three partitions are dynamic , simple. if i open these drives only the contents of one drive are...
Hardware & Devices
Changing letter drives, can't change back to D:\
I was messing around with my HDD partition and decided to rename my D:\ drive to X:\. Well everything went smoothly but then problems emerged. When I turn on my laptop a bunch of applications send the error message "No Disk". It says: "There is no disk in the drive. Please insert a disk into...
General Discussion
HDD Drive Letter Keeps Changing
I just got a couple of new HDDs to make notebook backups (clones) on. When I first formatted each one, using a USB dock, I set the drive letter of each one to U. Everytime I change the drives, the drive letter changes itself to E. I change them back to U but they change themselves back to E the...
Hardware & Devices
Changing 7 drive letter.
Hi, firstly, i apologize if this has been discussed before. I followed the guide posted here to dual boot XP & 7. All's working fine now. I can boot into both the OS without any problems. However, i've noticed that which ever OS i boot into, shows itself as installed on the C: drive. When in...
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 15:57.
Twitter Facebook