Cannot format diskette.
Cause Solution
Invalid media reported. When formatting a disk in MS-DOS, you may need to specify
diskette capacity. For example, to format a 1.44-MB diskette,
type the following command at the MS-DOS prompt:
FORMAT A: /F:1440
Disk may be write-protected. Open the locking device on the diskette.
A problem has occurred with a disk transaction.
Cause Solution
The directory structure is bad, or there is a problem with a file. In Microsoft Windows XP, right-click Start, click Explore, and
select a drive. Select File > Properties > Tools. Under Error-
checking, click Check Now.
In Microsoft Windows Vista, right-click Start, click Explore,
and right-click on a drive. Select Properties then select the
Tools tab. Under Error-checking click Check Now.
Diskette drive cannot read a diskette.
Cause Solution
You are using the wrong diskette type for the drive type. Check the type of drive that you are using and use the correct
diskette type.
You are reading the wrong drive. Check the drive letter in the path statement.
Diskette is damaged. Replace the diskette with a new one.
“Invalid system disk” message is displayed.
Cause
Solution
A diskette that does not contain the system files needed to start
the computer has been inserted in the drive.
When drive activity stops, remove the diskette and press the
Spacebar. The computer should start up.
Diskette error has occurred. Restart the computer by pressing the power button.
Cannot Boot to Diskette.
Cause
Solution
Diskette is not bootable. Replace with a bootable diskette.
Diskette boot has been disabled in Computer Setup. 1. Run Computer Setup and change the removable media
boot priority in Boot > Boot Device Priority > Floppy
Group Boot Priority.
2. Run Computer Setup and change diskette boot priority
in Boot > Boot Device Priority.
Table C-3 Solving Diskette Problems (continued)
156 Appendix C Troubleshooting Without Diagnostics
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