external hard drive

I am having issues with an image source in OBS on my iMac. The image I am trying to pull into OBS is stored on an external drive. The image has worked in the past and the source already exists in OBS. OBS will only launch if the external drive is not connected to my Mac. If OBS is already...

Hi, Firstly, if I am going to be recording at 1440p 60fps straight onto an external hard drive, what write speed should the hard drive have to avoid frame skips etc.? Does it have to be an SSD? (currently have a VBR target of 90,000 kbs). Secondly, if I were to record 4k 60fps, should I also...