Installing and Configuring SCSI Drivers 3-15Bit Mask OptionsUse this example to aid in calculating bit-mask option hexvalues. Each SCSI device (ID 0-7 or 0-15 for the AIC-7880 and optional AHA-2940W) is enabled by a 1 in itscorresponding bit position. As illustrated in Figure 3-1,dev_enable=05 enables driver registration of the devicesat SCSI IDs 0 and 2.Figure 3-1. Bit PositionSample loadCommandThe following command is a sample load command withno option switches (loaded from drive A):load a:\scsi\aic7870.dskSlot values that already have another registered device donot appear on the screen. Only the slots available for useby the host adapter appear when this command is entered.If an error message appears as you attempt to load thedriver, refer to “Troubleshooting for NetWare” later inthis section.The following command is a sample command loadingthe aic7870.dsk driver with command line options(loaded from drive A):load a:\scsi\aic7870.dsk verbose=y slot=22Using startup.ncfand autoexec.ncfThe startup.ncf and autoexec.ncf files contain a set ofcommands that are executed at server start-up. Thestartup.ncf file contains commands to load the disk driv-ers. Once startup.ncf loads disk drivers, control ispassed to the autoexec.ncf file to complete the boot pro-cess. For additional information on the startup.ncf andautoexec.ncf files, refer to your NetWare documentation.To automatically load the aic7870.dsk at server start-up,the startup.ncf must contain a load command line thatspecifies the location of the driver on the hard-disk drive,any available options (see “Using the load CommandLine Options” earlier in this section), and the slot number(see “Calculating the Slot Number” earlier in thissection).NOTE: To load the driver from your hard-disk drive, theaic7870.dsk driver and aspitran.dsk module must be cop-ied from your NetWare 4.x driver diskette to a directory onyour hard-disk drive (usually, the server's start-up direc-tory [for example, c:\nwserver]).The syntax to load the aic7870.dsk driver is:load [pathname] aic7870.dsk [options] slot=xFor example, the command line to load the driver fromthe c:\nwserver directory, with the verbose= option on,and a slot number of 16 follows:load c:\nwserver\aic7870.dsk verbose=y slot=16NOTE: For each Adaptec 78xx host adapter installed, aseparate load command line must be included in thestartup.ncf file. The slot number (slot=) identifies thespecific adapter.To modify the startup.ncf file, follow these steps:1. Type install at the NetWare prompt, and press.2. Select the appropriate menu choice that allowsyou to edit the startup.ncf file.3. Make the necessary changes. When you are fin-ished, press .Using SCSI DevicesThe following sections provide procedures and tips onthe following topics:• Booting from a SCSI device• Formatting media• Using removable media• Using NetWare-tested and -approved drives• Using the NetWare tape backup utility• Using a CD-ROM drive with NetWare• Optimizing performance15141312 111098 7654 32100 0 0 0 0 000 0000 01010 0 0 5bit positionSCSI ID0, 2convertedbinary-to-hex= 05h