A bunch of our dev files are stored on the R4i, and this is the first time we've ever seen storage be inaccessible during a beta, and we've been running betas for 14 years.

Apple says we can install the driver kext and it will stay active until the next reboot. How do we install the driver for the R4i in the meantime so that we can access our files and move them off the R4i temporarily?