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Note you must have a tape attached to mta2 this will get symbols of disk load.
start sim. i7090 ctss.ini sim> att com # Attach com controller. sim> at cr0 mit.crd System to load command. sim> bo dk0 Boot LDTSS. MIT8C0--THE DATE AND TIME ARE 0118712326.2 HALT instruction, IC: 00131 ( 076000000016 LMTM) sim> dep sw 3 To not start backup and FIB on bootup. sim> dep sw 0 To start both. sim> c

To Shutdown.
^E sim> dep keys 40017 this logs everyone off. sim> c

^E after READ KEYS message.
sim> dep keys 0 sim> c

`^E`
`sim> dep keys 40032              After all users loged out.`
`sim> c`
 `KEYS READ. 000000040032  AT  2334.3`
 `CTSS IS FINISHED. YOU MAY NOW CLEAR CORE.`
`HALT instruction, IC: 02651 (  000000002651   HTR 02651)`
`sim>                             It is safe now to exit sim.`