partition to a good working simulator and it works great. which is I believe system. I also want to that with a pdp-11 too. Gasp! I think you have a number of things wrong that need correction. First, now what LINUX stands for? Linux Is Not UniX. Yep, that's it! While it is true that LINUX is not UNIX, it is similar enough. It was designed to be a substitute for UNIX, and is good enough at it that one could argue it fully behaves as a UNIX now (which would be tantamount to saying it is UNIX, though it hasn't passed X/Open certification). Then, what's in the archive are not old versions of LINUX, but of UNIX. In the sense UNIX predates and sheds the field for LINUX you could think of them as LINUX antecessors, although there is no shared code or lineage among them. What you do when you "boot" the old versions within SIMH is run an ancient UNIX inside a program that emulates (behaves as) an old computer. You are not booting your computer. You are booting a virtual old computer. Then, to shut down an old machine, UNIX 6 or 7 you would simply 'sync' the disks (to ensure all temporary data was saved)and power down the machine. Or at least interrupt it to the console monitor. Under SIMH you can "interrupt" or stop the machine by pressing ^E ([Ctrl] + [E], both pressed at the same time). This will stop the emulation (sort of as if you had turned off the old machine) and take you to the SIMH command prompt. Once there simply type in "quit" and you are out. Under system 7 you start in single user mode. You can go to multi-user status by typing ^D. Then you can login and out as usual. And stop the machine as described above ('sync' a couple of times as root and press ^E). Regarding the filesystem, you don't need a partition. SIMH being an emulator and the machine (PDP11) virtual, everything is virtual. So, what you need to add more space is to add another disk. Not to *your* machine, but to the virtual machine, and not a real disk, but a virtual disk. I.e. a file on your *real* filesystem that you will treat as a virtual disk. Then attach it to the virtual PDP11 using the SIMH "attach" command (this would be tantamount to connecting the virtual wires of the virtual disk to the virtual computer). See the manual of SIMH for more details. As for formatting the disk, see the manual pages. I've got the kids in the bath now and can't type more, but this should be enough to clear up your mind. j ______________________________________________ LLama Gratis a cualquier PC del Mundo. Llamadas a fijos y móviles desde 1 céntimo por minuto. http://es.voice.yahoo.com