Platforms · external hard drive or SSD
File recovery from an external hard drive
How do I recover deleted files from an external drive?
Short answer
First disconnect the drive and stop writing to it. On a hard disk or USB flash drive, deleted data often survives until it is overwritten; on an external SSD, TRIM may clear freed blocks quickly, so chances are lower. Identify the file system, scan read-only and recover only onto a physically different disk.
The situation
Files disappeared from a USB drive, hard disk or external SSD.
Files disappeared from a USB drive, hard disk or external SSD. If the original source has not been written to again, useful file-system traces or data blocks may still remain for external hard drive or SSD. A read-only scan can assess the source, but no result should be promised before that examination.
01 / Diagnose
Work out what actually disappeared
Hard drives, SSDs and flash media behave differently after deletion. SSD TRIM can reduce recovery chances even when a filename remains in a directory. For external hard drive or SSD, first separate a missing path, folder or volume name from actual deletion. That distinction determines the safest next recovery step.
Check the last known path, trash and backups without writing to the original device.
02 / Protect the source
Preserve the best recovery chance
- 1
Disconnect or remove external hard drive or SSD and prevent further writes.
- 2
Write down the device, the date and the last action before the loss so you can match recovered files later.
- 3
Check known destinations, backups and trash without restoring anything onto the source.
- 4
Export every candidate only to internal storage or a physically different drive.
Disconnect the drive, identify its file system and recover to a physically different disk. Do not record a test file and do not approve formatting or file-system repair.
03 / Choose the method
Match the tool to the source
For stable, readable exFAT, NTFS and FAT16/FAT32 or uncompressed IMG, DD, RAW and BIN images.
Unconfirmed exports are marked .UNVERIFIED.
Software cannot reconstruct overwritten blocks or storage cells that are no longer readable. If the source disconnects repeatedly or becomes unusually warm, a professional laboratory is the safer route.
04 / Verify
Check the recovered content, not just its name
Validate files recovered from external hard drive or SSD completely: compare the size and format, then read the content from beginning to end. A preview or surviving filename is not proof of a complete recovery.
Keep the source until two verified copies exist. One working preview is not enough.
Sources and technical references
FAQ
Questions about this recovery case
Can external hard drive or SSD be recovered in this situation?+
Files disappeared from a USB drive, hard disk or external SSD. If the original source has not been written to again, useful file-system traces or data blocks may still remain for external hard drive or SSD. A read-only scan can assess the source, but no result should be promised before that examination. The result still depends on what remains readable on the source.
How do I know whether the result is complete?+
Validate files recovered from external hard drive or SSD completely: compare the size and format, then read the content from beginning to end.
Does scanning write to my memory card?+
Your memory card is only read. Nothing is saved to it.