Mikrotik Proxy Store

Hi there?

Is there any way to turn off the store setting when it sets the web-cache to system drive when the usb drive fails?

I would rather it just not work untill the usb drive it working again?

I have a 80gb 2.5" plugged in via uSB for cache and i looked today and its runnig on the system drive?

I dono want it to do this as it fills up the onboard storage and is slower than spining hdd?

Can any one advise me how to 1. either prevent the usb drive to not say “invalid” or to turn off the automatic switch over.

Or, can some one help me wright a script that sets webcahse1 (usb1) to active

then i can run it every 30min??