Data Recovery of Geological Surveys from 4TB Seagate Backup Plus Disk

The Seagate Backup Plus range is an extremely popular range of external hard disks in Ireland. The are widely available from computer retailers, trade suppliers and come in a variety of colors and capacities. They come in a 2.5” form factor (marketed as the Backup Plus Portable and Backup Plus Slim) and a 3.5” form factor (marketed as Backup Plus Hub 3TB, 4TB, 5TB,6TB and 8TB).

Last week a customer dropped in a 2.5” 4TB Seagate Backup Plus disk to us which was not being recognised on their Windows PC. They examined the Disk Management section of their computer and the disk was showing up there as “unallocated”. They then tried swapping the USB cable, but the disk was still not recognised by Windows Explorer. When they tried to run data recovery software on the disk, their whole system just froze. They ran Seatools diagnostics on the disk a SMART test fail result was returned in less than a minute.  

The disk inside the enclosure was a Barracuda ST4000LM024. Diagnostics revealed over 27,448 bad sectors and a corrupt MFT. The Master File Table stores crucial information about an NTFS volume structure.

After the disk’s media issues were solved, manual editing of the primary MFT was needed before the volume became mountable again. Over 3.78 TB of geological surveys were recovered which had been created with the Qgis application. Client over the moon.

Drive Rescue Dublin provide a complete data recovery service for Seagate Backup Plus external USB hard disks which are not being recognised, which are clicking or which are appearing completely dead.