How to verify the file system integrity of your NetScaler MPX appliance

Last published : Sep 30, 2026
Complete the following procedure to verify the file system integrity of the NetScaler MPX appliance.
  1. Connect a console cable to the serial console of the ADC appliance, which is 9600 baud, 8 bits, 1 stop bit, and No parity.
  2. Restart the appliance.
  3. Press Ctrl+C keys simultaneously when you see the message Booting [/ns-12.1-60.19] counting down from 2 to 1 second. At the OK prompt, type ? to show available commands.
    File system integrity OK prompt
  4. Type boot -s to start the kernel in single user mode.
    File system integrity
  5. Press Enter after the following message is displayed: Enter full pathname of shell or RETURN for /bin/sh.
    Note: The prompt of the appliance changes to \u@.
  6. Type fsck_ufs -y /dev/ad0s1a to verify the disk consistency of the /flash partition:
    File system integrity flash
  7. Type df to display the currently mounted partitions.
    File system integrity currently mounted partitions
  8. If the device name s1a is not mounted, type /sbin/mount /dev/ad0s1a /flash to mount the disk name s1a on the /flash partition. Type df to display the updated partitions.
    File system integrity updated partitions
  9. Type fsck_ufs -y /dev/ad0s1e to verify the disk consistency of the /var partition.
    Verify disk consistency
  10. If the device name s1e is not mounted, type /sbin/mount /dev/ad0s1e /var to mount the disk drive on the /var partition. Type df to display the mounted partitions.
    Display the mounted partitions
If the output does not appear to be normal or an error is displayed, reset the hard disk drive, and repeat the procedure again. If the error is displayed again, contact NetScaler® support for further investigation.