re: @sys$startup:X86_XTOOLS$SYLOGIN.COM "" "" "TRUE" I think that this only DEASSIGNs the logical names (i.e. the CLD changes are still in effect [which may be incompatible with the native/locally-installed stuff]... you may need to do something like SET COMMAND /TABLE=SYS$LIBRARY:DCLTABLES.EXE to get the default command definitions back)