STOP 0x000000ED UNMOUNTABLE_BOOT_VOLUME Error Message When You Restart Your Computer
Make sure the computer is set to BOOT from the CD-ROM or DVD-ROM drive. If this has not yet been done you will need to configure the computer to boot from the CD-ROM or DVD-ROM drive.
1. Insert the Windows XP CD-ROM into your CD-ROM or DVD-ROM drive, and then restart your computer.
2. When you receive the "Press any key to boot from CD" message, press a key to start your computer from the Windows XP CD-ROM.
3. When you receive the "Welcome to Setup" message, press R to start the Recovery Console.
4. If you have a dual-boot or multiple-boot computer, select the installation that you have to use from the Recovery Console.
5. When you are prompted, type the administrator password, and then press ENTER.
Note: If you do not have one, just press ENTER.
6. At the command prompt, type chkdsk /r and then press ENTER.
7. Once it has cmopleted, type exit, and then press ENTER to quit Recovery Console.
Microsoft Article ID: 555302
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