In
computing,
data recovery is a process of salvaging inaccessible data from corrupted or damaged
secondary storage,
removable media or
files, when the data they store cannot be accessed in a normal way. The data is most often salvaged from storage media such as internal or external
hard disk drives (HDDs),
solid-state drives (SSDs),
USB flash drives,
magnetic tapes,
CDs,
DVDs,
RAID subsystems, and other electronic devices. Recovery may be required due to physical damage to the storage device or logical damage to the
file system that prevents it from being
mounted by the host
operating system (OS).