To run Nextstep 2.1:

Start Previous, in settings:

In System, for Machine Type, select "NeXT Computer".

In Boot Options, select "SCSI disk" and check "Verbose test mode"

In SCSI Disks, set NS21_2GB_V3.dd as "SCSI Disk 0"

Then at the main menu click OK to start Nextstep.

During boot, Nextstep will wait for a network configuration server and fail.
(Ethernet is not implemented yet) You must press C to continue booting.

To properly shutdown Nextstep, press "F10".

For more information on Previous, see the following URLs:
http://www.nextcomputers.org/forums/viewtopic.php?t=2642
http://previous.alternative-system.com/
