There are a few potential causes for your PS4 disconnecting from your external hard drive. One possibility is that the PS4 is trying to access an older file that is no longer available on the hard drive. If this is the case, you may need to update your hard drive or install a new one. Another possibility is that the PS4 is trying to access a file that is not currently in your system. If this is the case, you may need to delete some files and then try again. Finally, it could be that the PS4 has encountered a problem with the hard drive and needs help recovering data. If this is the case, you can call PlayStation support and they will help you troubleshoot the issue.
