safecopy 1.3

safecopy is an open source data recovery tool which tries to extract as much data as possible from a problematic (i.e. damaged sectors) source - like floppy drives, CDs, tape devices, harddisk partitions, ..., where other tools like dd would fail doe to I/O errors.
A main problem with damaged storage hardware is, that once you get an unrecoverable IO error further reading from the file / device often fails until the file has been closed and re-opened.
The normal copy tools like cat, cp or dd do not allow creation of an image file from a disk or CD-ROM once reading of a sector failed.
Safecopy tries to get as much data from the source as possible, even resorting to device specific low level operations if applicable.

Enhancements
- Safecopy has been internally redesigned to improve reliability and predictability of behavior.
- It now comes with a textual behavior specification and a self test suite, complete... with a glibc wrapper library to simulate IO errors on virtual files.
- Blocksize autodetection now also works in combination with low level device access. Blocksizes can now be specified as a percentage of the file size or as multiples of the hardware blocksize, making these options much easier to use.
- New option presets provide shortcuts for multi-stage data rescue with minimum commandline typing effort