How to stop computer from Hibernating during a recording

[linfor]

I have a problem I cannot figure out. The computer wakes up fine from hibernation to start recording. However, it goes into hibernation while a recording is in process - which results in an interrupted recording.
I do not know why it is doing this as there is a lot of cpu activity while recording. This is a new computer so I do not know its quirks yet.
ANy ideas why it hibernates during a recording?

[andlju]

I don't think it cares about the CPU activity when deciding on whether or not to hibernate. However, it SHOULD care about hard drive activity (correct me if I'm wrong).. Are you perhaps recording to an external drive or something?

[betlit]

in some BIOSses (<--?) you can configure if disk activity should be monitored by the power management.

[linfor]

No I am recording to an internal drive. The Bios is not changeable in regards to hibernation.

[sub]

If your computer doesnt automatically keep the machine awake when then is disk activity, then I would disable automatic hibernation if I was you.