System hangs during reboot

If the Booting UnixWare... message does not appear when rebooting, the system may be hung. To correct this, check the following:

• If there is a disk in diskette drive 1, remove it. Press any key on the keyboard and the system should come up properly. If it does not, use <Ctrl><Alt><Del> or press reset to reboot the system.

• If you recently installed an add-on card, and if your computer worked properly before installing the card, remove the new card and see if you can reboot the system. If this solves the problem, there is probably an IRQ or address conflict. Reconfigure the card with a non-conflicting IRQ or address and then reinstall the card. (See your hardware documentation for details.)

• If your computer uses system shadow RAM or video shadow RAM, access your CMOS configuration and turn off the shadow function(s). While use of shadow memory improves performance for DOS systems, it has no effect on the performance of UnixWare.

• If your computer is not accessing your diskette drive, check in CMOS that your diskette drive type is properly configured. For example, if a 1.44 MB diskette drive is configured as a 1.2 MB drive, the diskette drive will not be accessed. Also check that your system memory is installed properly.

• If your computer has BIOS caching enabled, disable BIOS caching.

• If your system has an IDE disk drive that is larger than 512 MB, and your disk parameter heads are defined as greater than 16, verify that your system BIOS supports disk drive parameters with more than 16 heads. If your system BIOS does not support large disk drives, redefine your disk drive parameters using 16 or fewer heads. See your hardware documentation for details.

• If your computer has a hard disk drive greater than one gigabyte and you have an Adaptec 1542 SCSI controller with extended translation enabled, disable the extended translation.

• If your computer already had an operating system (for example, OS/2) before installing UnixWare, it may have a "boot code" on the hard disk which is incompatible with UnixWare. If this is the case, UnixWare will not boot and you may receive a message such as Cannot Load User Driver or No Active Partition Found.

  To resolve this problem, see ``System with multiple operating systems does not boot UnixWare''.

• Did any cables come loose? Check that power cables and the monitor cable are still connected.