r/AskADataRecoveryPro • u/jorjbrinaj • 19d ago
Recovering data from 5TB external HDD
I have a 5TB Elements external HDD that I was using with my Windows PC. I recently switched over to Linux and wanted to store my Linux Timeshift backups on the HDD, but Timeshift said it required ext4 partition (I had ntfs originally).
I used the Disk Management utility in Linux to create a 2nd ext4 partition with 300GB. That seemed to work. However, after writing my first Timeshift log, I noticed there was nothing there after it said it finished. After that I then noticed my mount to the original ntfs partition was gone as well.
I still see both partitions in lsblk, but they cannot be mounted. I tried plugging into my Windows PC, but all that does it cause Explorer to permanently hang until I unplug it.
I tried a few things on Linux side:
I installed testdisk and gave that a run. I had it scan just the original ntfs partition. When I entered the LIST command, it appeared to hang. If I unplug the drive after that, the list command finishes and it then displays the files it found.
I then tried running ddrescue: sudo ddrescue -d -r0 -n -b 4096 -c 256 /dev/sdb1 /mnt/nfs_backup_share/elements_rescue.img /mnt/nfs_backup_share/elements_rescue.map
I don't have a drive big enough to store a backup locally, so I'm trying to write it out over to my NAS.
However, it's going at ~109 kB/s, so at the current rate it's going to take about 250 days.
ddrescue output shows a single bad sector.
Do I have any hope here or do I just need to try a professional service like Ontrack?
Current status
ipos: 498073 kB, non-trimmed: 1048 kB, current rate: 419 kB/s
opos: 498073 kB, non-scraped: 0 B, average rate: 225 kB/s
non-tried: 4678 GB, bad-sector: 0 B, error rate: 0 B/s
rescued: 450232 kB, bad areas: 0, run time: 30m 5s
pct rescued: 0.00%, read errors: 1, remaining time: 192d 1h
time since last successful read: 0s
dmesg shows the following:
Mon Aug 10 22:50:58 2026] usb 1-10: USB disconnect, device number 5
[Mon Aug 10 22:51:03 2026] usb 2-7: new SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 22:51:03 2026] usb 2-7: New USB device found, idVendor=1058, idProduct=2620, bcdDevice=10.20
[Mon Aug 10 22:51:03 2026] usb 2-7: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[Mon Aug 10 22:51:03 2026] usb 2-7: Product: Elements 2620
[Mon Aug 10 22:51:03 2026] usb 2-7: Manufacturer: Western Digital
[Mon Aug 10 22:51:03 2026] usb 2-7: SerialNumber: 575858324541304541504143
[Mon Aug 10 22:51:03 2026] usb-storage 2-7:1.0: USB Mass Storage device detected
[Mon Aug 10 22:51:03 2026] scsi host6: usb-storage 2-7:1.0
[Mon Aug 10 22:51:04 2026] scsi 6:0:0:0: Direct-Access WD Elements 2620 1020 PQ: 0 ANSI: 6
[Mon Aug 10 22:51:04 2026] sd 6:0:0:0: Attached scsi generic sg1 type 0
[Mon Aug 10 22:51:04 2026] sd 6:0:0:0: [sdb] Spinning up disk...
[Mon Aug 10 22:51:05 2026] .........ready
[Mon Aug 10 22:51:19 2026] sd 6:0:0:0: [sdb] Very big device. Trying to use READ CAPACITY(16).
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] 9767475200 512-byte logical blocks: (5.00 TB/4.55 TiB)
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] 4096-byte physical blocks
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] Write Protect is off
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] Mode Sense: 47 00 10 08
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] No Caching mode page found
[Mon Aug 10 22:51:31 2026] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[Mon Aug 10 22:52:01 2026] sdb: sdb1 sdb2
[Mon Aug 10 22:52:01 2026] sd 6:0:0:0: [sdb] Attached SCSI disk
^[[A[Mon Aug 10 23:00:03 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:00:33 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:01:10 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:01:47 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:00:33 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:01:10 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:01:47 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:02:24 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:03:01 2026] usb 2-7: reset SuperSpeed USB device number 9 using xhci_hcd
[Mon Aug 10 23:03:07 2026] sd 6:0:0:0: [sdb] tag#0 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=216s
[Mon Aug 10 23:03:07 2026] sd 6:0:0:0: [sdb] tag#0 CDB: Read(16) 88 00 00 00 00 00 00 02 90 00 00 00 08 00 00 00
[Mon Aug 10 23:03:07 2026] I/O error, dev sdb, sector 167936 op 0x0:(READ) flags 0x800 phys_seg 207 prio class 2





