Mobile hard disk in the weather of only 4-5 degrees. Do you have any special ideas?

Safety, just like the hard disk built into the machine, will not be unusable at this temperature.

The hard disk is all vacuum, with air filter, leaving no water vapor and so on, and there is no dust inside.

As long as the temperature is not too low, this thing will not freeze, and it will slowly rise to a suitable temperature after starting operation, and this process will not suddenly rise to how many degrees, which is safe.