China DOS Union

The following is a reposted explanation:

Recommended: a three-in-one general-purpose driver package

　As computers now have more and more peripherals, the drivers for those peripherals that are not supported at the core level have one after another become memory-resident. Together with all sorts of other TSR programs, this has kept the use of memory below 1 MB in the DOS environment extremely tight. For this reason, quite a few programs have been designed to ease this problem. Most of them are of the “open source” kind, such as ＱＥＭＭ and so on.
　　The Ｍｕｌｔｉｍｅｄｉａ　Ｃｌｏａｋｉｎｇ　ｕｔｉｌｉｔｉｅｓ recommended here (hereafter abbreviated as ＭＭＣＬＫ) are a sort of three-in-one driver package. It can separately replace the drivers for the mouse, CD-ROM, and disk cache. The more drivers you originally used, the more memory this software can save for you, and it also reduces the possibility of system crashes.
　　I. Main contents of ＭＭＣＬＫ:
　　The core program of the ＭＭＣＬＫ package is ＣＬＯＡＫＩＮＧ．ＥＸＥ. After ＭＭＣＬＫ is installed, it stays resident in memory. Its function is to provide an ＡＰＩ interface for the following three drivers. As long as you use ＭＭＣＬＫ's drivers, this core program must be loaded into memory first.
　　1. Disk cache driver (ＣＡＣＨＥＣＬＫ．ＥＸＥ)
　　It can ensure compatibility with ＳＭＡＲＴＤＲＶ．ＥＸＥ that comes with ＤＯＳ. Its features are not only low resource usage, but also faster speed than ＳＭＡＲＴＤＲＶ．ＥＸＥ. The exact amount of memory it uses depends on your settings. It has two loading methods:
　　(1) Load it in ＣＯＮＦＩＧ．ＳＹＳ:
　　ＩＮＳＴＡＬＬ＝Ｃ：＼ＭＭＣＬＫ＼ＣＡＣＨＥＣＬＫ．ＥＸＥ　Ｋ＝２０４８　ＷＫ＝２０４８　ＷＢ＝１６　ＷＲＩＴＥＣＡＣＨＥ　ＷＤ＝５４
　　(2) Load it in ＡＵＴＯＥＸＥＣ．ＢＡＴ:
　　Ｃ：＼ＭＭＣＬＫ＼ＣＡＣＨＥＣＬＫ．ＥＸＥ　Ｋ＝１８５６　ＷＫ＝１８５６　ＷＢ＝４　ＷＲＩＴＥＣＡＣＨＥ　ＷＤ＝５４
　　2. ＣＤ－ＲＯＭ driver (ＣＤＥＸＣＬＫ．ＥＸＥ)
　　It uses only 2K of memory to replace ＭＳＣＤＥＸ．ＥＸＥ, and is fully compatible with Microsoft's ＭＳＣＤＥＸ. It needs to be loaded in ＣＯＮＦＩＧ．ＳＹＳ:
　　ＤＥＶＩＣＥ＝Ｃ：＼ＭＭＣＬＫ＼ＣＤＥＸＣＬＫ．ＥＸＥ　／Ｄ：ＭＳＣＤ００１　／Ｌ：Ｄ
　　At the same time, the package also includes an ＭＳＣＤＥＸ．ＥＸＥ for friends who do not use ＣＤＥＸＣＬＫ．ＥＸＥ:
　　Ｃ：＼ＭＭＣＬＫ＼ＭＳＣＤＥＸ．ＥＸＥ　／Ｄ：ＭＳＣＤ００１　／Ｌ：Ｄ
　　It uses only 3K of your memory!
　　3. Mouse driver (ＭＯＵＳＥＣＬＫ．ＥＸＥ)
　　It needs even less memory (under 1K) to replace a mouse driver of more than ten K, thus greatly saving memory. It is also loaded in ＣＯＮＦＩＧ．ＳＹＳ:
　　ＤＥＶＩＣＥ＝Ｃ：＼ＭＭＣＬＫ＼ＭＯＵＳＥＣＬＫ．ＥＸＥ
　　According to the author's tests, all of the above programs can be loaded into upper memory.
　　II. Installation of the ＭＭＣＬＫ package:
　　After extracting the archive, just run ＳＥＴＵＰ．ＥＸＥ and it will automatically modify your settings and correctly install these drivers for you.
　　The installer first looks for ＣＯＮＦＩＧ．ＳＹＳ (the system configuration file) in the root directory, determines whether it uses multiple configurations, and if so, lists the various configurations so you can choose which configuration item to install. After making your choice, it enters the main configuration menu. The settings for each installation option are explained below:
　　1. Disk cache installation options:
　　(1) Ｄｉｓｋ　Ｃａｃｈｅ　Ｓｉｚｅ　　　Determines the size of the disk cache.
　　(2) Ｃａｃｈｅ　Ｓｉｚｅ　ｕｎｄｅｒ　Ｗｉｎｄｏｗｓ　　　Determines the size of the disk cache under Windows.
　　(3) Ｄｅｌａｙ　　　Delay for background write operations (unit: seconds).
　　(4) Ｂｕｆｆｅｒ　Ｓｉｚｅ　　　Determines the size of the write buffer.
　　(5) Ｏｔｈｅｒ　Ｍｅｄｉａ　　　Determines whether to cache floppy drives and CD-ROM drives.
　　2. ＣＤ－ＲＯＭ installation options:
　　(1) ＣＤ－ＲＯＭ　Ｄｅｖｉｃｅ　Ｎａｍｅｓ　　　Enter the device name of your CD-ROM drive; up to 4 CD-ROM drives can be installed.
　　(2) Ｆｉｒｓｔ　ｄｒｉｖｅ　ｌｅｔｔｅｒ　　　The drive letter of the first CD-ROM logical drive.
　　3. Mouse installation options:
　　(1) Ｌｅｆｔ／Ｒｉｇｈｔ　Ｂｕｔｔｏｎ　Ｓｗａｐ　　　Swap the left and right mouse buttons.
　　(2) Ｍｉｄｄｌｅ／Ｒｉｇｈｔ　Ｂｕｔｔｏｎ　Ｓｗａｐ　　　Swap the middle and right buttons (for three-button mice only).
　　(3) Ａｃｃｅｌｅｒａｔｉｏｎ　　　Mouse acceleration.
　　(4) Ｏｒｉｅｎｔａｔｉｏｎ　　　Correct the mouse direction, allowing any of the four directions—up, down, left, or right—to be specified as the mouse's forward direction.
　　(5) Ｂｌｉｎｋ　Ｒａｔｅ　　　Adjust the blink rate of the mouse in text mode.

The cloaking inside needs an extraction password!

The password?

Just run SETUP to install it...

Thanks for the tip! Good grief, I was still using password-cracking software to brute-force it!!