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Windows 7: Problems with driver letter after partitions changed

05 Mar 2010   #11
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

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
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05 Mar 2010   #12
jpnascim

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 Win7 partition is found and boot sequence is initiated.

Problem is that, for some reason, Win7 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 Win7 to boot up correctly. Plaase, see my first post.

Thanks,

Joćo Pedro
My System SpecsSystem Spec
05 Mar 2010   #13
jpnascim

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
jpnascim

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 Win7 install procedures I will execute will be on my current Win7 partition....
My System SpecsSystem Spec
05 Mar 2010   #15
jpnascim

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 Win7 registry or boot loader entries....
My System SpecsSystem Spec
05 Mar 2010   #16
iseeuu

 
 

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 Win7 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
jpnascim

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 win7 as far as I could (until I got to the empty desktop) and tried to start Win7 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 Win7 (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 win7 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
iseeuu

 
 

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 win7 as far as I could (until I got to the empty desktop) and tried to start Win7 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 Win7 (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 win7 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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