ATEM Hard Drive Recording

Hi everyone. Having some trouble understanding and troubleshooting.
I have attached a file below illustrating my issue. Having been recording for many hours, only once I went to stop recording I noticed this. If it understand correctly, this tells me that I only have 18 minutes of footage recording onto my hard drive. Is there a way in which I can ensure the rest of my footage is keep? Worth mentioning as well is that it will not let me stop recording when I hit the REC button. Any help and explanation would be greatly appreciated.
Thank you, L.
I have attached a file below illustrating my issue. Having been recording for many hours, only once I went to stop recording I noticed this. If it understand correctly, this tells me that I only have 18 minutes of footage recording onto my hard drive. Is there a way in which I can ensure the rest of my footage is keep? Worth mentioning as well is that it will not let me stop recording when I hit the REC button. Any help and explanation would be greatly appreciated.
Thank you, L.