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- Making Hard Copy of the Document
- ================================
-
- The documentation (DXP.DOC) in the package has been typeset with a 57-line
- page so it will print nicely on most printers.
-
- In order to print the documentation, you can type the following on the
- command line:
-
- copy dxp.doc prn
-
- OR
-
- type dxp.doc > prn
-
-
- Disk eXPress 2.30 Images and Older Versions of Disk eXPress
- ===========================================================
-
- Older versions of Disk eXPress have no knowledge of the Data Encryption
- feature introduced in version 2.30. Running an older version of Disk
- eXPress against an encrypted and compressed image will cause it to crash.
- For uncompressed but encrypted images, the data restored to diskettes will
- be encrypted, and therefore, making the diskettes unusable.
-
-
- Installation Recommendation
- ===========================
-
- It is recommended you use either the 32-bit or the 16-bit version of
- Disk eXPress. If you maintain both versions on your hard drive under
- 32-bit OS/2, the recommended setup for your LIBPATH and PATH may look like
- this:
-
- LIBPATH=.;C:\DLL32;C:\DLL16; ... C:\OS2\DLL;C:\OS2\APPS\DLL; ... ;
- SET PATH=C:\OS;C:\OS2\SYSTEM; ... C:\BIN32;C:\BIN16; ... C:\FAMBIN; ... ;
-
-
- C:\DLL32 -- for holding 32-bit OS/2 DLLs
- C:\DLL16 -- for holding 16-bit OS/2 DLLS
- C:\BIN32 -- for holding 32-bit OS/2 executables
- C:\BIN16 -- for holding 16-bit OS/2 executables
- C:\FAMBIN -- for holding OS/2 family and dual mode executables
-
- Copy DXP.EXE to C:\FAMBIN. Rename DXP32.EXE to DXP.EXE and copy it under
- C:\BIN32.
-
- If you only use DOS, you can copy DXP.EXE to any subdirectory under your
- current search path.
-
-
- Disk eXPress 32-bit and Extremely Fast Systems
- ==============================================
-
- On the average systems, the 32-bit OS/2 version of Disk eXPress will run
- faster than the 16-bit version by about 30%. However, on extremely fast
- systems (486DX-50, 486DX2-66, and Pentium), you may notice the diskette
- read/write thread running slower than the 16-bit version. This has been
- traced down to motherboard and floppy controller mismatch and/or incorrect
- ISA bus timimg. If you are using an ISA bus PC, make sure the bus speed
- is set to 8MHz.
-
-
- Self-Extracting Executable and non-DOS Diskette
- ===============================================
-
- The self-extracting executable will not recognize and write to non-DOS
- diskette. Use a DOS formatted diskette, or use DXP or Xtract to write
- to the non-DOS diskette. You may need the /a switch to specify diskette
- capacity if auto-sensing fails to detect the correct physical diskette
- type.
-
- The /a switch in Xtract is undocumented. The syntax for using it to
- specify a non-DOS diskette is the same as Disk eXPress. Xtract is
- available in the licensed version of Disk eXPress.
-
- When running the 16-bit OS/2 version of Disk eXPress under OS/2 1.x, the
- automatic diskette detection logic will not detect diskettes with non-
- standard number of tracks due to the limitation of the floppy driver.
- For instance, an 82 tracks diskette will be detected as having 80 tracks;
- and therefore, the image file produced is incorrect.
-
- When using DXP under DOS, the automatic diskette sensing routine limits
- the detection of non-DOS diskette in either drive A or B. External
- diskette drives using drive letter other than A or B is not supported.
- In this case, you must either use the /a switch to specify capacity or
- use the OS/2 version of DXP.
-
-
- Sector Skew Optimization and Old Floppy Hardware
- ================================================
-
- Sector skew optimization may not work on old floppy drives which may have
- very slow track-to-track access time; or on slow systems, such as a 286 PC
- or even a low end 386SX. If Disk eXPress is running slower with a sector
- skew optimized diskette, reformat the diskette with regular FORMAT or use
- the /f switch in the future instead. Sector skewing has no appreciable
- effects under DOS, since it does not support multi-threading.
-
-
- New Addition to Disk eXPress: VMDISKX
- =====================================
-
- Starting with Version 2.20, Disk eXPress includes an additional program
- called VMDISKX. VMDISKX performs the reverse of VMDISK for making the
- Virtual Machine Boot diskette for OS/2 2.x. This program is provided
- 'as-is'.
-
- Here is the help screen for VMDISKX:
-
- VMDISKX Version 1.02 11/08/93
- (c) Copyright 1993 Albert J. Shan. All Rights Reserved.
-
- usage: VMDISKX VMB_Image drive: [/f]
-
- VMB_Image Diskette image file created by VMDISK
- drive Target diskette drive
- /f Format the target diskette (optional)
-
- Example: VMDISKX dos.img a: /f
-