Since I had some time, I had a look at the installer script. This is the workbench protection part :
IF "`df0:c/which DF0:`" EQ "Workbench3.0:"
ECHO ""
ECHO "Disk appears to be Workbench 3.0 release."
ECHO ""
ECHO "Checking version number..." NOLINE
df0:c/wait 1
df0:c/VERSION >nil: DF0:libs/version.library 39 FILE
IF WARN
ECHO "INCORRECT!"
SKIP SECOND
ELSE
ECHO "CORRECT!"
SKIP PASS
ENDIF
ECHO ""
ENDIF
LAB SECOND
IF "`df0:c/which DF0:`" EQ "Workbench3.1:"
ECHO ""
ECHO "Disk appears to be Workbench 3.1 release."
ECHO ""
ECHO "Checking version number..." NOLINE
df0:c/wait 1
df0:c/VERSION >nil: DF0:libs/version.library 39 FILE
IF WARN
ECHO "INCORRECT!"
SKIP FAIL
ELSE
ECHO "CORRECT!"
SKIP PASS
ENDIF
ECHO ""
ENDIF
which means you need a floppy with at least the version command and the version.library (both of which do not exist on the real_amiga_install disk). Ok, you can write your own dummy version command and version.library to go with it, but it's pretty out of the scope of avarage joe I guess.
Anyway, and here are the files copied from the workbench disk :
copy >NIL: df0:c/Addbuffers SYS:c
copy >NIL: df0:c/Binddrivers SYS:c
copy >NIL: df0:c/Conclip SYS:c
copy >NIL: df0:c/Delete SYS:c
copy >NIL: df0:c/Dir SYS:c
copy >NIL: df0:c/Ed SYS:c
copy >NIL: df0:c/Edit SYS:c
copy >NIL: df0:c/IPrefs SYS:c
copy >NIL: df0:c/List SYS:c
copy >NIL: df0:c/Makedir SYS:c
copy >NIL: df0:c/Mount SYS:c
copy >NIL: df0:c/Rename SYS:c
copy >NIL: df0:c/Version SYS:c
copy >NIL: df0:c/Wait SYS:c
actually, yeah it's not that they cared to leave copyrighted stuff out, but it's still useless to someone without a workbench floppy.