Recovering a USB Drive That Windows Calls 'Unreadable'
When Windows pops up 'You need to format the disk before you can use it' on a USB full of important work, clicking Format is the worst thing to do. This guide covers the correct sequence: cancelling the format prompt, mounting read-only, running CHKDSK, and using deep scan recovery when the file table is too damaged to repair.
Key Topics Covered
Why you must click Cancel on the format prompt
Read-only mount to prevent accidental overwriting
CHKDSK /f repair on unreadable USB
Deep scan file carving for destroyed file tables
exFAT vs NTFS vs FAT32 unreadable drive differences