Password Recovery Guide for FS N8560-32C

NOTEs:

To enter the Rboot menu you need to reboot the device, which will lead to business interruption, so back up the device as needed, and perform password recovery at a time with less business.
Before performing this operation, you need to contact the FS support at https://www.fs.com/tech_support.html to get the right user name/password used for entering Rboot shell.
Do not power off the switch during this operation.

Step 1 Power off and on to force restarting the switch, then press Ctrl+C to enter Rboot menu.

Step 2 Type 4 in the Rboot menu to enter the Scattered utilities menu, then Type 4, and enter the right user name and password to enter Rboot shell (Contact the FS support at

https://www.fs.com/tech_support.html to get the user name and password).

Step3 Check out the PICOS system boot partition.

ONIE:/ # blkid
/dev/sda6: LABEL="User-Data" UUID="da55e09c-0e7b-4d96-a8c9-bee2ed5bb42c"
/dev/sda5: LABEL="PicOS2" UUID="3f228548-64c1-492c-ad3d-8ca7d248c11a"
/dev/sda4: LABEL="PicOS" UUID="039453f9-0879-4c86-9e0b-8ef4d34d9a66"
/dev/sda3: LABEL="PICOS-GRUB" UUID="b3a8ab95-43f9-4f21-9c76-7f48101be381"
/dev/sda2: LABEL="ONIE-BOOT" UUID="7fcaa6c8-d174-42c1-abd1-8c6eea46eb6b"
/dev/sda1: LABEL="EFI System" UUID="36E9-D2F5"
ONIE:/ #

We find that the partition of LABEL="PicOS2" is /dev/sda5 and LABEL="PicOS" is /dev/sda4.

Step4 From the ONIE prompt, perform the following commands to mount the boot partition.

ONIE:/ # mount /dev/sda5 /mnt/   
ONIE:/ # mount /dev/sda4 /mnt/

Step5 Modify the shadow file.

# vi etc/shadow

Change the following line from:
admin:$1$eE9WFgVk$EwGcNl83uK98.r8TcKn2q/:15385:0:99999:7:::
into:
admin::15385:0:99999:7::: //Remove the string between the first and the second colon

Step6 Execute the sync operation.

The subsequent steps are distinguished between devices currently running in OVS and L2/L3 mode. Please choose the appropriate steps according to the PicOS mode.

L2/L3 Mode:

Step7 Modify the configuration file.

In the pica_startup.boot file, you will find lines starting with “user admin {“, remove lines of user admin configurations.

For example, remove the following six lines in configuration file.

Save and exit with “:wq”.

Copy the configuration file to the backup file.

Step8 Umount and reboot the switch.

Step9 When you see PicOS login again, you can log in by the admin user without a password.

Step10 Set a new admin password using the following CLI commands and save the configuration.

After the above steps, you can log into the system with the new password.

OVS Mode：

Step7 Umount and reboot the switch.

Step8 Set a new admin password with passwd admin command and save the configuration. The commands are illustrated here:

After the above steps, you can log into the system with the new password.