Apple NetBoot for OS 9 1.0 for Mac was available as a free download on our software library. The application lies within Internet & Network Tools, more precisely Network tools.
From the developer:
Apple Netboot for OS9 is identical to the NetBoot for Mac OS 9 software included with Mac OS X Server 10.2 (Jaguar).
Early NetBoot capable Maces will not be able to use the feature of obtaining IP addresses from a DHCP server.
Newer Maces are all NetBoot capable, although some will need the latest Open Firmware Update to use DHCP. You can obtain the Open Firmware Update atwww.apple.com/support.
You may want to check out more Mac applications, such as attach, which might be similar to Apple NetBoot for OS 9.