PTS-DOS 2000 has its own BIOS, loaded first after bootsector code was executed.
There was also a (english) DEMO version (ptsds2k.zip) with a 1 minute delay while booting.
This DEMO delay is included in the above mentioned BIOS file PTSBIO.SYS, which can be patched easily with PATCHPTS.EXE.
Just copy PATCHPTS.EXE into the root directory of the already installed DEMO of PTS-DOS 2000. Then execute PATCHPTS, unhide and remove the read-only flag from PTSBIO.SYS, rename the original file, rename the new created file and hide and set read-only flag of PTSBIO.SYS again.

So just do it like this:

patchpts
attrib PTSBIO.SYS -s -r -h
rename PTSBIO.SYS PTSBIOD.SYS
rename PTSBIO.NEW PTSBIO.SYS
attrib PTSBIO.SYS +s +r +h

No more DEMO delay.

Have fun ! P.D.
