HP 3000 Manuals HP 3000 Manuals
Native Mode Device Files by William O'Shaughnessy Commercial Systems Division NEW SYSTEM ACCESS TO DEVICE INFORMATION This release of MPE XL uses a new method for getting information on devices. This method is called Native Mode Device Files (NMDF). NMDF creates a new account named 3000devs. This account is for system internal use only. Its name was chosen because of system functionality requirements. Programs that scan the directory should be aware of this account. NMDF NEEDS DISC SPACE ON LDEV1 Another important impact of NMDF is that each device or class in the system now takes about four sectors of disk space on LDEV 1. Before creating any new devices or classes be sure that the system has the required free disk space on LDEV 1. Devices are usually created at system boot time, after being configured before system shutdown by a subsystem such as SYSGEN.PUB.SYS or NMMGR.PUB.SYS. The DISCFREE.PUB.SYS utility can be used to check the amount of free disc space.