Q.Explore possible ways of recovering deleted data or data from a corrupted device.

When a file is "deleted", the OS usually removes only its directory entry — the actual data blocks stay on the disk until overwritten. Recovery methods exploit this:

1. Recycle Bin / Trash — a normally-deleted file sits here; right-click → Restore.
2. Backups — restore from Windows File History, a system backup, or a cloud copy (Google Drive/OneDrive version history).
3. Data-recovery software — tools such as Recuva, PhotoRec or TestDisk scan the disk for orphaned data and rebuild deleted files (works even after Shift+Delete).
4. Repairing a corrupted device — run chkdsk (Windows) on the drive to fix file-system errors; recovery software can also read files off partially corrupted media.
5. Professional data-recovery labs — for physically damaged drives. …

Why recovery is possible at all. When you delete a file, the operating system typically just marks its directory entry as removed and its disk blocks as free — the actual contents remain physically on the device until some new file happens to overwrite them. Recovery methods work by finding and re-linking that still-present data. This is also why the first rule of recovery is: stop using the affected drive immediately.

Ways to recover deleted data

1. Recycle Bin / Trash. A file deleted normally (Delete key) is only moved to the Recycle Bin — open it, right-click the file → Restore. (Shift+Delete bypasses this, needing method 3.)
2. Restore from a backup. The most reliable route when it exists:
   • Windows File History or a system image backup;
   • Cloud sync services (OneDrive, Google Drive) — they keep deleted-file bins and version history for weeks.
3. Data-recovery software. Tools like Recuva (Windows, friendly GUI), PhotoRec/TestDisk (free, cross-platform) scan the raw disk for orphaned file data and rebuild it. Install and recover to a different drive so you don't overwrite the target.

Ways to recover from a corrupted device

4. File-system repair. For a pen drive/HDD that shows errors or asks to be formatted: run chkdsk with the repair option on that drive (Windows: chkdsk E: /f) to fix file-system corruption; often the files reappear. …