Our Configuration had 3 EX 4200 48P switches in stack during a recent power failure the entire stack was rest and all the configuation was lost. We were able to restore the master with the backup configuration but the remaining 2 switches are stuck on loading junos. We can console into the switches and both of them are labeled as linecard 0 one was configured as backup and other was configured as line card with no split detection enabled. and virtual chassis preprovisioned. We tried to factory reset the switch so as to reconfigure it to be added to the stack but that does not work either.Tried to commit a config but keep getting error message
error: could not open /var/etc/pam.conf+: Operation not permitted
error: commit failed: foreign file propagation failed during preprocessing
When i ran the snapshot command there is no output
{linecard:0}
root> show system snapshot media internal
{linecard:0}
root>
Are the switches Dead? We dont have any JTAC support on these switches. We are going to try booting the device via USB to see if that helps us to fix the issue.