Before attempting this procedure, ensure you have the following:
/usr/bin/authconfig --update
or for older DD OS (5.x/6.x):
| Symptom | Likely Cause | Fix | |---------|--------------|-----| | passwd: Authentication token manipulation error | /etc/shadow or /etc/passwd locked by DD process | Remount rw and kill any dd_auth process: pkill dd_auth | | sysadmin account is locked after reset | Too many failed attempts | passwd -u sysadmin and faillock --user sysadmin --reset | | Maintenance mode asks for password | You booted "Single User Mode", not "Maintenance Mode" | Reboot and choose the correct entry | | init=/bin/bash not working on DD OS 7.x+ | SE Linux or restricted kernel params | Append init=/bin/sh instead, then mount -o remount,rw / | | Password reset works but SSH fails | PAM mismatch | authconfig --enablemd5 --update then reboot |
This is the best-case scenario. In many organizations, the sysadmin and root passwords may be different, or one team member knows one but not the other. If you have access to the root account (often disabled by default but enabled in many enterprises), resetting sysadmin takes seconds. how to reset sysadmin password in data domain
But what happens when the keeper of the keys loses them? For system administrators, forgetting the sysadmin password is a heart-stopping moment. Without it, you cannot access the DD OS command line, you cannot perform upgrades, and you cannot manage the critical backend settings of the appliance.
# If you have any access (e.g., another user account), use: system reboot Before attempting this procedure, ensure you have the
This procedure requires physical console access or an iDRAC/Serial-over-LAN connection. You cannot do this over SSH or HTTP (Data Domain System Manager) because you need access to the bootloader.
*If