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Windows cannot boot, MUP.SYS file is missing.

APPLIES TO:
  • Parallels Desktop for Mac Home Edition

Resolution

Solution A:


Boot the virtual machine using the original Windows installation disk, and copy the mup.sys [mup.s??] file from the disk using the EXPAND command:


  1. Insert the Windows XP bootable CD into your Mac.

  2. Open Configuration Editor, find the CD/DVD-ROM options, choose the "Default CD/DVD-ROM" and make sure the "enable" and "connect at startup" check-boxes are selected. Click OK to close Configuration Editor and save the changes you've made in the VM configuration. 

  3. Start the virtual machine.

  4. When prompted to press any key to boot from the CD, press any key.

  5. In the Windows XP setup menu, press the "R" key to repair Windows and open the Windows XP Recovery Console.

  6. Log into your Windows installation by pressing the "1" key and pressing enter.

  7. You will then be prompted to enter your administrator password.

  8. Copy the file below to the root directory of the primary hard disk. In the below example we are copying the file from the CD/DVD-ROM drive letter "E". This letter may be different on your computer.


    expand /r E:\i386\MUP.SY_ C:\WINDOWS\system32\drivers

  9. Once both of these files have been successfully copied, remove the CD from the computer and reboot.

 

Solution B.

If the issue persists, repair Windows installation



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