Remo Recover is a perfect tool that can assist you in recovering data from an undetected Seagate Backup Plus drive. So, it is suggested to back up your data first and then troubleshoot the issue. At times trying to fix the unrecognized drive leads to permanent data loss. Then you should immediately recover data from the Seagate Mac drive using a powerful data recovery software. In case, your Seagate Backup Plus portable Drive is not showing up on any other system. Sounds really simple but it is one of the most effective ways to find out if your device is actually corrupt or not. Connect your Seagate hard drive to any other system.So one of the most basic solutions is to try to insert the hard drive using a different cable or connecting it to a different port. At times there are issues with the cable or the ports. You can try inserting the hard drive into any other port. We highly recommend you follow the DIY methods mentioned below. External drive damage or corruption etc.Some of the major reasons why Seagate backup plus hard drive is not getting detected on Mac are as follows: Why is my Seagate External Hard Drive Not Showing Up on Mac?
This article gives you a brief idea about the reasons behind this problem along with the solutions. In Apple support communities a number of Mac OS X users have reported that their Mac machine won’t show up Seagate Backup Plus drive.