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-u -m -f UNMOUNT, MOUNT, and FSCK volumes on a partition or whole-drive basis. Unmount is persistent based on /etc/fstab entry for the volume UUID. This prevents disturbance of volume structures while recovery is in progress
-c COPY (or SCAN) a drive, partition, or single file using GNU ddescue. This creates a domain map and read-rate log which are stored in the metadata directory named by a user-supplied <label>.
-p -s REPORT files affected by read-errors and slow-reads using metadata and additional utilties for supported filesystems (See DEPENDENCIES).
-Z ZAP device blocks associated with read-errors to try to make those blocks readable. This offers the potential to regain access to a filesystem that is otherwise unmountable, or access an affected file in situ.
Options allow preview of the block addresses to be ZAPPED, and 4K blocks rather than the default 512-byte blocks for use with Advanced Format Drives.
