While booting, the Security Analytics appliance is hung at a screen during the boot process that says, "Give root password for maintenance (or press Control-D) to continue). If you press Control-D, the server may continue to boot or it may reboot.
Security Analytics S500
There is a file system inconsistency. Typically you will see a message on the boot screen complaining about a file system. You may see a message like "UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY". Pay attention to which volume it is complaining about. In the below example, the problem volume is /VAR
Pay attention to what file systems it is complaining about. Typically it will be something like /VAR or /HOME.
If you cannot unmount the volume for some reason, you can prevent the volume from mounting by going to the /etc/fstab file and commenting out the mount command for the volume in question (using a # character). Reboot the appliance again and then follow the same steps above to run the manual fsck. Contact technical support for any further assistance.