Solved

Drive letter designation (C:) on my primary partition has been lost

Posted on 2006-11-23
6
826 Views
Last Modified: 2008-01-09
My system will not boot.  It gets as far as the Windows XP logo with the 'busy bar' going back and forth, hangs for a while, and then reiterates the entire reboot process.  Starting in Safe Mode reveals a hang at MUP.DLL.  

I booted Partition Magic from a bootable CD and discovered that the primary partition has no drive letter allocated to it.  Running FDISK shows the same problem, but I can't seem to do anything about it.  I tried PQBOOT, too.  (There is also a small partition which is described as FREESPACE.  It has no drive letter either)

How can I restore drive letter C without erasing the entire operating system?
0
Comment
Question by:bigdud
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 92

Expert Comment

by:nobus
ID: 18006299
0
 
LVL 9

Expert Comment

by:DjDezmond
ID: 18006338
Safe mode normally takes ages to load the MUP.SYS file (is it definately DLL file, or SYS?). If you leave it to load it should eventually load into safe mode.

Once in there, right mouse click on the my computer icon and click "Manage" to load the computer management MMC. Click on "Storage\Disk Management", Right mouse click on 'Disk0' and select "Change drive letter and paths..."

This will allow you to reassign the drive letter to the partition.
0
 
LVL 6

Accepted Solution

by:
CyberGhost earned 200 total points
ID: 18006431
There are 2 possible issues I can think of:

1. you might have been infected by a virus and this damaged some parts of your operating system or even changed the partition table, so you have the 'no C:\ letter' problem. In such case, I don't think you can just restore the C drive letter. You would probably have to reinstall the whole operating system.
You might also try to plug your hard drive to another computer that has a working OS (and some good antivirus on it) and see what happens. If that OS can recognize your drive, you can copy any files that you need from the Windows folder and perform new installation on your own computer.

2. the other option is that your hard drive is damaged. In such case, I'd also try to plug the hard drive to another computer (with working operating system and some antivirus installed) and check if that computer can see the drive. If so, I'd copy as much data from the drive as possible and buy a new drive. You might be able to mirror those parts of your damaged disk that work and restore them to a new drive, althought, I don't know any applications that can do it.
0
Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

 
LVL 92

Expert Comment

by:nobus
ID: 18006456
the mup.sys problem can be caused by nearly everything, hard and soft.
you can disconnect all devices and cards not needed for booting, and test.
0
 

Author Comment

by:bigdud
ID: 18007799
Thanks for your quick responses, guys.  I have an update:

1. Sorry, I meant MUP.SYS, not DLL.  

2. Even in safe mode, after a half minute or so, the delay at MUP.SYS falls thru and the entire boot process reiterates.  So I cannot get into the operating system under any circumstances.

3.  This is a laptop, and I cannot try the drive in another computer.

I'm inclined to agree with CyberGhost,  and looking forward to reinstalling the operating system.
Any final suggestions?
0
 
LVL 92

Assisted Solution

by:nobus
nobus earned 50 total points
ID: 18007825
try a repair install :  
http://www.michaelstevenstech.com/XPrepairinstall.htm      
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Disclosure: Use this tutorial only when no other options helps to get Windows XP running without any problems and you don't want to format the drive. The back up of the data is the responsible of the user, however there is a description of how t…
If you build your web application in Visual Studio you'll get at least a few binaries, or .DLL, files in your bin folder. However, there is more compiling to be done. Normally this would happen when an ASP.NET resource within the web site is request…
Two types of users will appreciate AOMEI Backupper Pro: 1 - Those with PCIe drives (and haven't found cloning software that works on them). 2 - Those who want a fast clone of their boot drive (no re-boots needed) and it can clone your drive wh…
Suggested Courses

732 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question