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Changing drive letters has screwed up my PC

Discussion in 'Windows XP' started by themoron, Jun 20, 2010.

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  1. themoron

    themoron Thread Starter

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    I wanted to install Windows XP on an old computer. Its CD drive was broken, so I installed XP from its hard drive instead. When everything was finished, I ended up with two drives, D and E. Unfortunately, I was tempted to change the letters (OCD, much?) to C and D, and did so (via regedit).

    Now, my computer won't boot up; the welcome screen shows up, but it freezes there.

    Can someone help me undo my stupid mistake? Thanks in advance!
     
  2. themoron

    themoron Thread Starter

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  3. themoron

    themoron Thread Starter

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    There has to be a way to change the registry back. Couldn't I just somehow boot a registry editor using a floppy? Need help!
     
  4. Tylerj

    Tylerj

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    http://support.microsoft.com/kb/223188
    So basically you should have done that but instead you only changed the drive letter and not the boot letter? So it's trying to boot off a drive thats not there? Am I right?
     
  5. themoron

    themoron Thread Starter

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    No, that is how I did it. Like I said, I used regedit.
     
  6. Tylerj

    Tylerj

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    Oh sorry I skimmed over. Which makes my last post mean nothing.
     
  7. Quackers88

    Quackers88

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    Did you make a registry backup before making the changes?
     
  8. themoron

    themoron Thread Starter

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    No, unfortunately :(

    Can I not use some sort-of bootable registry editor?
     
  9. TheOutcaste

    TheOutcaste

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    You can use a Vista or Win 7 DVD, or Recovery Environment CD to edit the registry.

    Edit XP Registry from Vista/Win 7 Disk

    1. Boot with the Vista/Win7 DVD, or Vista RE CD.
    2. Select your Language, click Next
    3. Click Repair your Computer
      It will scan for Vista/Win 7 installations, but won't find any, just wait for it to finish.
      If using Win7 Disk, select Use recovery tools that can help fix problems starting Windows. at the top.
    4. Click Next
    5. Click Command Prompt.
    6. Type regedit and press Enter.
    7. Highlight HKEY_LOCAL_MACHINE
    8. Click File | Load Hive...
    9. Navigate to C:\Windows\System32\Config
      (Note, the drive letter might be different if you have multiple partitions. You can type Dir C: in the prompt to verify.
      Try different letters until you find the correct drive).
    10. Select the hive you want to edit and click Open
    11. Give it a Name. I use @name of hive, like @System or @Software
      This will place it right under HKEY_LOCAL_MACHINE.
    12. When finished editing, highlight the name you choose, then click File | Unload Hive...
    13. Click Yes to unload
    14. Close the Registry Editor, close the Command Prompt, click Restart
    A Vista RE disk can be downloaded from one of these links:
    Vista Recovery Environment CD
    64 bit Vista
    32 bit Vista
    Windows 7 from here:
    Recovery Environment CD
     
  10. themoron

    themoron Thread Starter

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    As a slightly off-topic question, how can I actually make it so that I have partitions C and D instead of D and E. Simply changing the registry entries didn't work.

    Sorry about the gravedig.
     
  11. TheOutcaste

    TheOutcaste

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    You'll need to re-install XP. If you don't have a CD-Rom, you can start the install by connecting the drive to a different PC that does have a CD-Rom drive, edit the migrate.inf file so the drive letter will be C:, then move it back to finish the install.

    How to install XP to a drive while connected to another PC
     
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