User guide

Maintenance and Troubleshooting
Optical Test System 61
Defragmenting Drives and Files
Defragmenting Drives and Files
Over time, as applications read, write, and delete files, information stored
on the IQ-203 Control Unit hard disk may become fragmented. Basically,
fragmented files are longer to access and read than unfragmented files. To
reorganize the files on the disk and, thus, optimize disk performance, it is
recommended to perform a defragmentation at least weekly.
To initiate a defragmentation, from Windows Explorer go to C:\WINDOWS
and double-click on the file DEFRAG.EXE. For more information on
ScanDisk, refer to the Microsoft Windows documentation.
Scanning Hard Disks for Errors
Microsoft ScanDisk is a program used to detect errors on a computer drive.
Once found, the erroneous files are fixed and saved in the drive’s root
directory, under the name «FILE0000.CHK», «FILE0001.CHK»,
«FILE0002.CHK», etc.
In the Windows environment, a ScanDisk is automatically performed at
power up every time the IQ-200 Optical Test System has not been properly
shut down. It is recommended to verify the «.CHK» files from time to time
and delete the needless ones to free disk space.
Every time a ScanDisk is performed, the results of the disk analysis are
stored in the SCANDISK.LOG file. The SCANDISK.LOG is used to identify
any erroneous files detected at startup. It is recommended to occasionally
delete this file to prevent it from wasting disk space. For more information
on ScanDisk, refer to the Microsoft Windows documentation.