novicecctvguy

Hi All, After a recent hard disk failure I have had to replace the HD in my CCTV DVR, but do not have any firmware/ disk images. Is there any firmware/ operating system I can install to bring my DVR back to life? I purchased the DVR from ebay and had a linux embedded operating system already installed. There must be a standard CCTV Linux Embedded operating system I can install onto a hard disk. Thanks,