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- PATCH_SD.COM
-
- Version 5.0 of Microsoft's SmartDrive disk cache utility, provided
- with MS-DOS 6.2, is capable of caching CD-ROM drives. The program is designed
- to work exclusively with MSCDEX CD-ROM driver.
-
- Corel's PATCH_SD.COM program can modify the SMARTDRV.EXE to recognize Corel
- CORELCDX as a valid CD-ROM driver and cache CD data.
-
- The SMARTDRV cache uses memory more efficiently than Corel CDXCACHE - the
- same block of memory will be used simultaneously for hard disk and CD disk
- caches.
-
- On the other hand, the CDXCACHE program has smaller overhead and operates
- faster then SMARTDRV. Also, the CORELCDX /UNLOAD option will not work with
- SmartDrive, as the cache program needs to be loaded after CorelCDX.
-
- The PATCH_SD.COM program is designed to modify version 5.0 of SMARTDRV.EXE,
- (45145 bytes in size only). If the binary image does not match, the patch will
- not be installed.
-
- The patching program scans memory to locate the active SmartDrive cache
- program and from there locates the original disk image of SMARTDRV.EXE.
- If the SmartDrive cache is not currently installed, the program will ask you
- to enter the full path and name of the disk file to patch.
-
- The original Microsoft SMARTDRV.EXE is saved in the same directory as
- SMARTDRV.MSC.
-
- In order for the patch to work, you need to reboot the system (to reinstall
- SMARTDRV.EXE). Also, for SmartDrive to recognize a CD device, the CorelCDX
- driver needs to be installed before SMARTDRV.EXE (e.g. by changing sequence
- of entries in AUTOEXEC.BAT).
-