Use - button to delete the.There are several reasons why an external hard drive may not be accessible or detected when you connect it to your computer.In this event, continue on to the next item on this list. If the devices aren’t working on one or all ports, it’s more likely to be an issue with your Mac and not the device.Resolution Check whether the device you would like to connect to your virtual machine is listed under Permanent Assignments list. If there is no apparent damage, take two different USB devices and test them against different ports. Inspect the device visually, looking for damage to the connector and any signs of frayed wiring.IMac, MacBook, Mac mini, etc.Other Considerations for USB Not Working on a Mac. It can be an external flash drive, hard drive, or solid-state drive, which you can use it for storing and transferring data from different Macs, viz. USB port lacks power If you have the device plugged into a USB hub or into your keyboard, plug it directly into one of the USB ports on the computer.While it is possible that your external hard drive may have come with bundled software that may be incompatible with newer operating systems, this is typically just ‘back up’ software, and the drive is not dependent on that software to function.A USB drive is a removable external storage device that connects to a Mac through a USB port of type A, B, or C.
![]() Check For Usb In How To Format YourRead our How To Format Your Drive article for instructions on the process. In the middle towards the bottom locate the disk number from earlier.Once you have located the drive you will want to look for the following:Does it show RAW or Unallocated? Either of these indicates a possible issue with the drive’s formatting.If the drive shows as RAW or Unallocated and you have already tried a different port, cable, and computer but you need the data, then you will want to consider data recovery.If you do not need any data from the drive, you should be able to reformat the drive to restore accessibility. This will allow us to view the drive’s health.Capacity - Check to see if the drive is correct, for example if you have a 1 TB drive it should say 931 GB. You can format the drive if you don’t need the data. NTFS - If NTFS is missing then the file system has become corrupted. If you see an unknown device or other device then right-click on it and select properties. Important - Make sure to expand the Universal Serial Bus controllers section so you can see entries there as well. Within Device Manager look for any entries called unknown device, other device, or mass storage device with a yellow ! icon. If other drives have a letter but the external is missing then you can right-click and select change drive letter or path.If the drive was not detected under Disk Drives then check the following: If it is missing, verify that other drives have a letter. You should see that Windows is installing device drivers. Once the computer is booted, plug the drive into a different port. Shut the computer down and disconnect the drive. Right-click on the device with the issue and select uninstall. Code 43) then try the following: Visit the Warranty and Replacements section on Seagate.com for further details.If you see Code 28 (this may work for others codes too, i.e. In Mac OS X version 10.6 to 10.10, click Verify Disk to see if the volume needs to be repaired. If the drive didn’t mount this indicates some level of file system corruption.Select the indented entry and then click on First Aid The indented entries will vary depending on how the drive is formatted but these entries will be volumes or containers associated to the physical disk.Select the indented entry for your drive and click on the “ Mount” button at the top of the Disk Utility. In Mac OS X version 10.6 to 10.10 this entry will display the capacity of the drive instead of saying media. ![]() USB, Firewire, Thunderbolt, etc.) Under hardware locate the interface you are using (i.e. If it says About this Mac then press and hold the option key again.Once in System Information/System Profiler: If there is no indented entry then the drive needs to be formatted or run the data recovery software on the drive in an attempt to retrieve your files.If the drive needs to be formatted then click on the article that matches the operating system.How to format a drive in Mac OS 10.6 to 10.10How to format your drive in macOS 10.11 and aboveIf the drive is not detected in Disk Utility then check System Information/System Profiler.Hold the Option key then click on the Apple Icon, the first entry should say System Information/System Profiler. If the drive is detected on the other Mac then continue with the following Apple specific troubleshooting.Trying some of Apple specific troubleshooting may help resolve the issue.Reboot into Safe Mode and see if the drive is detected. The serial and/or model number should be listedIf the drive is not in System Information/System Profiler or in Disk Utility then try another Mac to see if the drive is detected there. You should see the drive information listed in centre at the bottom Dmg mori canadaSometimes it helps to do these more than once.If you have exhausted either of the Windows or Macintosh advanced troubleshooting steps, and your external hard drive is still not accessible or detected, for further assistance contact Seagate support.
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