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Windows 7: Problems with driver letter after partitions changed

05 Mar 2010   #11
Arc

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium 64 Bit SP 1
 
 

Quote   Quote: Originally Posted by iseeuu View Post
Yes, I could see how that might work, especially if a new clean install was important...
Thanks a lot

My System SpecsSystem Spec
.

05 Mar 2010   #12

Windows 7 Ultimate x64
 
 

hello Arc,

thanks for your response. Well, in fact I've already ran "startup up repair" and bootloader seems to be repaired now as my Windows 7 partition is found and boot sequence is initiated.

Problem is that, for some reason, Windows 7 now assigns letter D: to its own system partition and this used to be C: (before I modified the partitions and everything was fine). This is preventing Windows 7 to boot up correctly. Plaase, see my first post.

Thanks,

Joćo Pedro
My System SpecsSystem Spec
05 Mar 2010   #13

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by iseeuu View Post
In addition to the "Startup Repair" mentioned by Arc, you may also need to do a "Repair Install" ... meaning after booting to 7 (as best as you can) run the Install DVD from Windows 7: Repair Install

Cheers!
Robert
Hi Robert,

Ok I will try that when I get home...

thanks,
My System SpecsSystem Spec
.


05 Mar 2010   #14

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Arc View Post
Having a Clean Install Windows 7 in the new active (c) partition (space for the partition is already there, as after deletion of xp the partition is neither formatted to a new one nor merged with another one)..... and then copying the documents from the other drive (where the previous installation was)..... Workable ?
Space from my previous Windows XP partition was already merged with my DATA partition. Any Windows 7 install procedures I will execute will be on my current Windows 7 partition....
My System SpecsSystem Spec
05 Mar 2010   #15

Windows 7 Ultimate x64
 
 

Hi guys,

Do you think the following might help?

*FIX* Wrong Drive Letters in Multi-Boot XP,Vista, W7

Maybe problem is within Windows 7 registry or boot loader entries....
My System SpecsSystem Spec
05 Mar 2010   #16

 
 

Quote   Quote: Originally Posted by jpnascim View Post
Hi guys,

Do you think the following might help?

*FIX* Wrong Drive Letters in Multi-Boot XP,Vista, W7

Maybe problem is within Windows 7 registry or boot loader entries....
Well ... it is worth a try ... I have no experience with this however.

First I would suggest you try the "Repair Install", use a command prompt from the windows desktop to access the DVD and run setup.

If that does not work, try something else ... ?

Cheers!
My System SpecsSystem Spec
05 Mar 2010   #17

Windows 7 Ultimate x64
 
 

Well, problem is solved! I had to try a couple things until I got to the solution:

1) Downloaded "Partition Saving" as described in *FIX* Wrong Drive Letters in Multi-Boot XP,Vista, W7

I tried to use option "Update Windows 2000/XP/Vista Registry " but it did not offer me to change letter to C. It only showed D and E. So, I aborted this solution.

2) Tried to boot Windows 7 as far as I could (until I got to the empty desktop) and tried to start Windows 7 setup.exe from DVD in order to run a "Recover Installation" as it was suggested. It kept telling me that it could not find "setup.exe" (and every other executable I tried, even though they were there). I aborted this solution also.

3) Now, with the solution that worked:
Doing some research I learned that Windows 7 (and Vista) keep track of assinged drive letters to each partition in the registry. More precisely at: [HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices]

I had to boot in safe mode (as my Windows 7 install would not let me run regedit.exe) and cleared everything there in that key. The concept is to let Windows discover partitions by itself again and reassign letters again.

I rebooted my machine and DONE!

More of this procedure (with detailed explanation) at:

Multibooters, Vista Dual and Multibooting - Drive Letter Problems

Thanks everyone for the suggestions and help!

Joćo Pedro
My System SpecsSystem Spec
05 Mar 2010   #18

 
 

Quote   Quote: Originally Posted by jpnascim View Post
Well, problem is solved! I had to try a couple things until I got to the solution:

1) Downloaded "Partition Saving" as described in *FIX* Wrong Drive Letters in Multi-Boot XP,Vista, W7

I tried to use option "Update Windows 2000/XP/Vista Registry " but it did not offer me to change letter to C. It only showed D and E. So, I aborted this solution.

2) Tried to boot Windows 7 as far as I could (until I got to the empty desktop) and tried to start Windows 7 setup.exe from DVD in order to run a "Recover Installation" as it was suggested. It kept telling me that it could not find "setup.exe" (and every other executable I tried, even though they were there). I aborted this solution also.

3) Now, with the solution that worked:
Doing some research I learned that Windows 7 (and Vista) keep track of assinged drive letters to each partition in the registry. More precisely at: [HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices]

I had to boot in safe mode (as my Windows 7 install would not let me run regedit.exe) and cleared everything there in that key. The concept is to let Windows discover partitions by itself again and reassign letters again.

I rebooted my machine and DONE!

More of this procedure (with detailed explanation) at:

Multibooters, Vista Dual and Multibooting - Drive Letter Problems

Thanks everyone for the suggestions and help!

Joćo Pedro
We are very glad you found a solution that worked for you! And thanks for posting back. You are appreciated!

Happy surfing!
Robert
My System SpecsSystem Spec
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