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Windows 98

In the recently released Microsoft Windows 98, Microsoft added a new feature to Disk Defragmenter. Windows 98 will keep track of the exact sequence of file accesses needed to load a program and then store that information on the hard disk in the \Windows\Applog directory. A record of which files are loaded more often than others is also saved. [Mil98] The file tracking is performed by a utility called ``Task Monitor.'' A log file is created for each program used. In addition, a file called Optlog.txt is created in the \Windows\Applog directory. The file lists all of the programs Disk Defragmenter will attempt to optimize the next time it is executed. [Ran98] Windows 98's Disk Defragmenter then uses that information to reorder the individual clusters that make up each file so that they load consecutively to reduce disk head movement. [Mil98] Related files, in the order they are needed by a program, are also moved physically closer together. [Ran98] The most frequently loaded files are also put on the fastest part of the disk. [Mil98]

Although this appears to improve disk performance, it apparently reduces the usefulness of third party utilities because the resulting disk will appear logically fragmented. The third party utilities will need to be updated specifically for Windows 98. [Mil98] One such utility is Symantec's Norton Utilities 3.0 for Windows 95. On the same day that stores began selling Microsoft Windows 98, Symantec made available a patch to make Norton Utilities 3.0 compatible with Windows 98. The patch could be obtained and installed by running the LiveUpdate program that is included in Norton Utilities 3.0. [Cor98b] The patch modifies Symantec's disk defragmenter, Speed Disk, so that it uses the files created by Windows 98's Task Monitor on systems running Windows 98. [Cor98a]


next up previous contents
Next: Windows NT Up: Disk Defragmenter Previous: Windows 95
Barnett Hsu
1998-10-31