How to make factory set Juniper SRX 100 through SSH

root@boobi% cli
root@boobi>edit

root@boobi# load factory-default    //here fails

#show  //here you see all that config details


#run file list/config/?   //here history has been listed

#run file list /var/log/?   //here is the logs

finally

#run request system zeroize  ///here all your data has been erased

(yes)or (no) : yes

warning..

now your SRX 100 has been factory default set successfully.