------------------------------------------------------------------------- Installing Dual Boot on Your Computer ------------------------------------------------------------------------- This file contains information on installing the MS OS/2 dual-boot option on your computer. The dual-boot option allows you to choose between the MS OS/2 and DOS operating systems each time you "boot" or start your computer, either by turning it on or by pressing CTRL+ALT+DEL. During dual-boot installation, you need the following items: - A DOS start-up disk that contains the files CHKDSK.EXE and either SYS.COM or SYS.EXE. -The disk labelled "Dual boot disk" from your MS OS/2 package. You will also need to know the location of the start-up files (AUTOEXEC.BAT and CONFIG.SYS) you will use when you run DOS. To install the dual-boot option on your computer, follow these steps: 1. Install MS OS/2 on your computer. 2. Insert a DOS start-up or boot disk in drive A and press CTRL+ALT+DEL. 3. Remove the DOS start-up disk and insert the disk labelled "Dual boot disk". This disk contains the Dualboot utility. 4. At the DOS A: prompt, type the following command: dualboot The dual-boot setup utility starts. Follow the instructions on the screen to complete the procedure. After you install the dual-boot option on your computer, a message appears each time you start your computer, asking you which operating system you want to run. You can turn the dual-boot option on or off or change any of the settings by running the Dualboot utility again. After you initially install dual boot on your system, you can run the Dualboot utility from either MS OS/2 or from DOS. Re-installing or updating MS OS/2 or DOS will remove dual-boot. If MS OS/2 is re-installed, rerunning the dual-boot setup utility will re-install dual-boot. If DOS is re-installed, MS OS/2 will have to be re-installed before rerunning the the dual-boot setup utility. WARNING: After you install the dual-boot option on your computer, you'll find copies of both the MS OS/2 and DOS configuration files in the root directory of your hard disk. When you start MS OS/2, the MS OS/2 configuration files are renamed CONFIG.SYS and AUTOEXEC.BAT and the DOS configuration files are renamed CONFIG.DOS and AUTOEXEC.DOS. When you start DOS, the opposite renaming process occurs: the DOS configuration files are renamed CONFIG.SYS and AUTOEXEC.BAT; the MS OS/2 files are renamed CONFIG.OS2 and AUTOEXEC.OS2. The configuration files with the standard names and extensions always correspond to the operating system you start. Both sets of configuration files are necessary for the dual-boot option to work. Do not delete or rename these files.