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GNU ddrescue 1.21 released

From: Antonio Diaz Diaz
Subject: GNU ddrescue 1.21 released
Date: Mon, 21 Mar 2016 14:12:43 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv: Gecko/20070601 SeaMonkey/1.1.2

I am pleased to announce the release of GNU ddrescue 1.21.

GNU ddrescue is a data recovery tool. It copies data from one file or block device (hard disc, cdrom, etc) to another, trying to rescue the good parts first in case of read errors.

GNU Ddrescuelog is a tool that manipulates ddrescue mapfiles, shows mapfile contents, converts mapfiles to/from other formats, compares mapfiles, tests rescue status, and can delete a mapfile if the rescue is done.

The homepage is at

The sources can be downloaded from or from your favorite GNU mirror.

The sha1sum is:
0a216c53b486979bc97cd8e7e7b79c621c305862  ddrescue-1.21.tar.lz

This release is also GPG signed. You can download the signature by appending ".sig" to the URL.

Changes in version 1.21:

* A bug in the alignment of the I/O buffer has been (hopefully) fixed. (Thanks to Heikki Tauriainen).

* Ddrescue now exits with status 1 in case of unaligned read in direct mode (because of a wrong sector size, for example).

* Short option names '-1' and '-2' have been removed to avoid mistakes in the command line.

* Only regular files are now allowed as arguments of options '--log-rates' and '--log-reads'.

  * Option '-D, --odirect' now works also in fill mode.

* Option '-J, --verify-on-error' now marks blocks as failed on any error, and exits with status 1 if a read error happens before a good sector is found.

  * Option '-X, --exit-on-error' has been extended to all phases.

  * The short name '-Z' has been assigned to option '--max-read-rate'.

* The mapfile is now "fsync'ed" every 5 minutes because some systems seem to never write the mapfile to disc.

* Ddrescue now shows all sizes in rescue mode; non-tried, non-trimmed, non-scraped, bad-sector and finished.

  * Ddrescue now shows the percentage of the domain rescued in rescue mode.

Please send bug reports and suggestions to address@hidden

Antonio Diaz, GNU ddrescue author and maintainer.

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