===Stacker 4.0 Update=== This Stacker 4.0 Update (S4UP.EXE) contains everything you need to update your system. It includes: --Reduced memory footprint if you are using QEMM 7.5 --Complete Windows for Workgroups, 32-bit file access compatibilty --Improved Stacker Optimizer uses extended memory while defragmenting. Note: If your system doesn't have extended memory, the Optimizer uses conventional memory. See your User's Guide for more information about the Stacker Optimizer. You must already have Stacker 4.0 installed on your system to use this update. If you are using QEMM 7.5, Multimedia Stacker, or Windows for Workgroups, please perform the steps following the installation instructions. ---------------------------------------- Installation Instructions ---------------------------------------- 1. If you received this update on a floppy, insert the floppy disk into drive A or B. If you downloaded this update, you need to know into which directory you copied the file S4UP.EXE. 2. If you are in Windows, exit Windows completely. 3. Change to the Stacker directory. If C:\STACKER is your Stacker directory, at a C: prompt type CD \STACKER and press ENTER. 4. Copy the file S4UP.EXE from its directory (or from floppy) to your Stacker directory. (For example, type COPY B:S4UP.EXE and press ENTER.) 5. From your Stacker directory, type S4UP and press ENTER to unarchive the file. Then, type SUPDATE and press ENTER to run the update program. Note: The message "Cannot update this driver version" means one of two things. You already have the lastest Stacker update on your system, so you do not need this update. Or, you have a Stacker version prior to 4.0 installed; install Stacker 4.0 first. 6. Restart your computer. How to locate your Stacker directory: 1. At a DOS prompt, type ED /I and press ENTER to show your STACKER.INI file. 2. Find a line that includes /DIR=. The path that follows the equal sign is your Stacker directory. 3. Press the ALT key, followed by F, then X to close the editor. ---------------------------------------- QEMM 7.5 ---------------------------------------- This part of the update is valid only with DOS 6 or later. ==To take advantage of lower memory footprint with QEMM 7.5 1. From your Stacker directory, type ED /I and press ENTER. 2. Press ENTER to insert a new line. 3. Type /QD on the new line. 4. Press the ALT key, followed by F, then press X to exit the editor. 5. When asked if you want to save the changes, press Y. 6. Restart your system to put the change into effect. ---------------------------------------- Multimedia Stacker ---------------------------------------- This update sets Stacker compression to MaxSpace. Multimedia Stacker uses the MaxSpeed setting by default. Use one of these procedures to set the tuning back to MaxSpeed after installing S4UP. ==To set tuning to MaxSpeed under Windows 1. Open the Stacker Windows Toolbox. 2. Select a Stacker drive in the drive bar. 3. Click the Tune icon. 4. Click the MaxSpeed icon, then click OK. 5. Close or minimize the Toolbox. ==To set tuning to MaxSpeed under DOS 1. From your Stacker directory, type TUNER and press ENTER. 2. Press up-arrow to highlight Fastest Speed or click it. 3. Press C or click Continue. ---------------------------------------- Windows for Workgroups ---------------------------------------- Stacker now works seamlessly with Windows® for Workgroups (WFW) 3.11 32-bit file access (32BFA). Stacker requires no special options or configurations. You do however, have to explicitly turn on 32BFA and enable lazy writes. The following steps explain how. ==To turn on 32BFA 1. From within Windows, open the Control Panel in the Main Group and double-click the 386 Enhanced icon. 2. Click the Virtual Memory button, and on the next screen, click the Change button. 3. At the bottom of the dialog box, check the 32-bit file access box. A cache size appears in the adjacent window. Accept the default setting for now. If you want to change it later, you can. Note: Ensure that you check the 32-bit file access; checking only 32-bit disk access will not increase performance. 4. Click OK. 5. Then click Yes to make the changes to virtual memory. 6. Click Restart Computer to make the changes take effect. ==To enable lazy writes in WFW 1. From the Program Manager's File menu, choose Run. 2. In the Command Line box, type SYSEDIT and press ENTER. 3. Select the window that contains your SYSTEM.INI file and in the [386Enh] section, type the line ForceLazyOn= followed by the drive letter(s) of your Stacker drive(s). For example, if your Stacker drives are C:, D:, and E:, you would insert the following line: ForceLazyOn=CDE 4. Save the file and exit the editor. 5. Exit and restart Windows to put the changes into effect. ---------------------------------------- Common 32BFA Workarounds ---------------------------------------- If you have trouble initializing 32BFA in Windows for Workgroups, here are some common workarounds that might help: * Make sure you are using a permanent swap file. 32BFA will not initialize properly with temporary swap files. * Be sure to close any open files or files (such as printer caches) that are open by a line in your Autoexec.bat file. * After turning on 32BFA, ensure these lines are in the [386Enh] section of your SYSTEM.INI file: device=vfat.386 device=ios.386 device=vxdldr.386 These lines mean a Real Mode Mapper (RMM) is loaded. * Make sure the "minfilecache=" entry in the [vcache] section of the SYSTEM.INI is appropriate for the amount of memory you have. For example, a 2-MB cache would be appropriate for a system with 8 MB RAM. * If the DOS SUBST command is run before Windows for Workgroups loads, 32-bit file access will not initialize. * If you started the real mode network (NET START FULL or NET START BASIC) and then start Windows for Workgroups, 32-bit file access will not initialize. For information about other system conditions that might interfere with using 32BFA, check with Microsoft. ======================================== (C) 1994 Stac Electronics. All rights reserved. One or more U.S. patents: 4701745, 5016009, 5126739, and 5146221. Other patents pending. All Stac product names are trademarks or registered trademarks of Stac Electronics. Other product names are trademarks of their respective holders. Portions (C) Novell 1994. ========================================