Starts the Fastopen program, which improves performance on computers with large directories. Fastopen decreases the amount of time that it takes to open frequently used files. Do not use this command when Windows is running.
Fastopen tracks the location of files on a hard disk and stores the information in memory for fast access.
Warning: To avoid losing data, do not run a defragmentation program such as Microsoft Defragmenter while FASTOPEN.EXE is loaded.
FASTOPEN drive:[[=]n,[m]] [drive:[[=]n,[m][...]] [/X]
Every time you open a file, Fastopen records its name and location in the name cache. If you later reopen a file recorded by Fastopen, the access time is greatly reduced.
Fastopen works only on hard disks and does not work over a network. You can use Fastopen with as many as 24 hard-disk partitions at one time. For each partition, Fastopen can track the number of files specified by the n parameter. The maximum number of files that Fastopen can track on all partitions is 999.
You cannot run more than one copy of Fastopen at the same time. If you want to change the Fastopen settings, you must restart the operating system.
You should not use the Fastopen command from DOS Shell, because doing so can lock up your machine.
Fastopen requires approximately 48 bytes of memory for each file that it tracks.
You can add a Fastopen command to your CONFIG.SYS file by using the INSTALL command. Use this technique when you do not want to start Fastopen from the operating system command-line or from your AUTOEXEC.BAT file.
If you want to track the location of as many as 100 files on drive C: