How to fix Seagate Backup Plus drive not recognized/detected/showing up?

Summary: Here is how to fix Seagate Backup Plus drive not recognized/detected/showing up on Mac computewer and how to recover data from unrecognizable Seagate Backup Plus drive with iBoysoft Mac Data Recovery.

By Katrina | Posted to Mac Data Recovery, updated on March 15th, 2019 |

I use a Seagate 2TB Backup Plus Portable HD as my Time Machine backups drive and it had been working fine. Since I upgrade to Yosemite (may be coincidental?) the HD is no longer recognized by my MacBook Pro. I can see the light on HD so I am sure it is getting power. I searched for all day but no Seagate firmware update available (attempt to update shows it to be current) and no other help available from Seagate "support." Can anybody help me cuz I'm really in need of the files on this drive.

- Post from Apple Communities

Seagate Backup Plus drive is a popular external hard drive that has many cool features. However, there are times when you plug in Seagate Backup Plus drive but it isn't showing up on your Mac computer or you can't access data on it at all. Actually, it's a common issue that people discussed in Apple Community – the Seagate Backup Plus drive is not recognized or detected, and sometimes the external hard drive even greyed out in Disk Utility. The reason for this could be various and this page will illustrate the possible causes behind this problem briefly along with the solutions.

The causes for Seagate Backup Plus Portable drive not detected issue could be:
• A recent macOS update
• Faulty connection such as wobbly USB port and broken cable
• File system corruption in this Seagate Backup Plus drive
• Virus infection
• External drive hardware errors
• Other unknown reasons

Then how can you fix the problem that Seagate Backup Plus Drive is recognized/detected/showing up on Mac?

Table of contents
1. Have some basic checks
2. Show Seagate Backup Plus drive in Finder or on desktop
3. Check whether Seagate Backup Plus drive can be found in Disk Utility

First of all: Have some basic checks

Once your Seagate Backup Plus drive is not recognized on your Mac computer, you can try some routine checks first.

1. Re-plug the Seagate Backup Plus drive and check if it is connected properly.

2. Try a different USB port or cable to see whether the USB port or cable is bad.

3. Connect Seagate Backup Plus drive to another Mac or PC and see if it is compatible with.

All checks seem to be OK? Then you can fix this issue with the following solutions one by one.

Show Seagate Backup Plus drive in Finder or on desktop

For many Mac users, when they say Seagate Backup Plus drive is not showing up, they mean their drives can't show up in Finder or on the desktop. In this case, you can try to show your external drives through resetting Finder Preferences.

Step 1: Go to Finder >Preferences > Sidebar.

Step 2: Tick "External disks" in Sidebar tab to show external hard drives in Finder.

show Seagate Backup Plus drive in Finder

Step 3: Shift to the General tab.

Step 4: Check "External disks" under "Show these items on the desktop" and you’re your connected Seagate Backup Plus drive will appear on the desktop.

show Seagate Backup Plus drive on the desktop

Check whether Seagate Backup Plus drive can be found in Disk Utility

After setting "External disk" to show up in the Finder or on desktop, your Seagate Backup Plus drive is still not showing up on Mac? you maybe need to check whether the Seagate Backup Plus drive can be found in Disk Utility because it really means a lot.

Scenario 1. Seagate Backup Plus drive shows up in Disk Utility

If Seagate Backup Plus drive is listed in Disk Utility, then you can have a relief because it means your drive has no serious hardware problem. And you can follow the below solutions to fix the unrecognizable Seagate Backup Plus drive.

a. Mount Seagate Backup Plus drive

Sometimes, external hard drives cannot be automatically mounted on Mac. But you still have a way to mount Seagate Backup Plus drive manually in Disk Utility:

Step 1: Open Disk Utility.

Step 2: Right click the Seagate Backup Plus drive from the left sidebar and then click the Mount button.

b. Repair Seagate Backup Plus drive via First Aid

If the above method doesn't work, it might refer to some file system errors on the Seagate Backup Plus drive. We should check and verify Seagate Backup Plus drive by First Aid.

Step 1: Launch Disk Utility.

Step 2: Choose the grayed-out Seagate Backup Plus drive.

Step 3: Select First Aid in the top center and click Run.

First aid Seagate Backup Plus drive

c. Reformat Seagate Backup Plus drive

If First Aid fails to correct errors on Seagate Backup Plus drive, the last choice is to reformat Seagate Backup Plus drive. But reformatting will erase all data stored on Seagate Backup Plus drive. If data stored on the external hard drive are for you and you don't have any backup, you'd better recover data from the unrecognizable Seagate Backup Plus drive at first with Mac data recovery software, like iBoysoft Mac Data Recovery.

Step 1: Recover data from Seagate Backup Plus drive

iBoysoft Mac Data Recovery is a free Mac data recovery software that can recover deleted files from emptied Mac trash, recover data from formatted, inaccessible, corrupted, unmountable, unreadable drive, etc. in macOS 10.14 Mojave/10.13 High Sierra/10.12 Sierra and Mac OS X 10.11/10.11/10.10/10.9/10.8/10.7.

Tutorial to recover data from Seagate Backup Plus drive drive with iBoysoft Mac Data Recovery

1. Download and install iBoysoft Mac Data Recovery on Mac.

Recover data from Seagate Backup Plus drive with iBoysoft Mac Data Recovery

2. Launch iBoysoft Mac Data Recovery.

3. Select the drive you want to recover data from and click "Next" button to scan for all lost data.

Select the desired drive in iBoysoft Mac Data Recovery

4. Preview the searching results, choose files you need, and click "Recover" to get them back.

preview and recover the lost data from this drive

Step 2: Reformat Seagate Backup Plus drive

1. Launch Disk Utility.

2. Select the Seagate Backup Plus drive on the left part of the window.

3. Click the Erase on the top of the Disk Utility window.

4. Complete the related information (name, format, scheme), then click Erase.

reformat the unrecognizable drive

Scenario 2: Seagate Backup Plus drive can't show up in Disk Utility

If Seagate Backup Plus drive can't show up in Disk Utility, unfortunately, your Seagate Backup Plus drive may have some physical problems.

a. Try iBoysoft Data Recovery

In some situations, Disk Utility fails to recognize Seagate Backup Plus drive, but it can be recognized by some data recovery software.

b. Send it to a local technician for help

If unfortunately, iBoysoft Mac Data Recovery cannot detect your Seagate Backup Plus drive either, in this case, you'd better send the drive to a local data recovery service and see if they could help.

Katrina

Katrina is a data recovery expert @iBoysoft who loves to help readers solve various data recovery problems.

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