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30 .Nd recover data from disk-like devices.
51 The internal work-list can be saved and loaded so that
54 source hard-disk shuts down.
56 The work-list is initialized with a single item which covers the entire
60 always chips away at the first item on the work-list.
63 from the work-list.
71 The first pass attempts to read everything in "big-size" chunks,
72 the second pass reads in "medium-size" chunks and third and subsequent
73 passes read in "small-size" chunks.  This three stage process is
77 If too many read-errors are encountered,
81 The three sizes default to 128kB (or less if the sector size does
82 not divide 128kB cleanly, for instance audio CD media), and the
90 .Bl -tag -width indent
97 .It Fl r Ar work-list-file
98 Read the work-list from a file.
99 .It Fl w Ar work-list-file
100 Write the work-list to a file when a read succeed, but at most once
102 .It Fl l Ar log-file
123 Produce a detailed progress report with ANSI escapes and UTF-8.
135 .Bd -literal
145 # read an ISO image from a CD-ROM
149 recoverdisk -r worklist -w worklist /dev/cd0 /data/cd.iso
158 has been used to recover all sorts of data-media for two decades,
160 .Bl -bullet
164 .Fl -w work-list-file
184 is a problem, use a USB-(S)ATA adapter instead.
193 If you need to read ST-506, RLL or ESDI drives
200 process the work-list in the order it is read, this
201 can be accomplished by sorting the work-list with
215 For floppies and un-zoned hard disks (ST-506 to
222 .Xr ada 4 ,
223 .Xr cam 4 ,
224 .Xr cd 4 ,
225 .Xr da 4
233 .An -nosplit
235 .An Poul-Henning Kamp Aq Mt phk@FreeBSD.org
239 This manual page was originally written by
244 and removed from the work-list, but not yet flushed to
251 on the destination before writing the work-list to a
254 .Fl w Ar work-file-list
259 should have an option for reconstructing the work-list