Free recover ext2 formatted drives software for linux

recoverPhotos is a program that recovers digital images from camera memory cards that have been formatted or damaged.
This program relies on the fact that most photos are composed of contiguous sectors. If you tend to delete a lot of photos before a format, then you might not have very good success. But if you are like me: who reformats every time) then you fill get most of your pictures back.
This program has only been tested with a 20d. Any success stories are welcome.
HOW TO USE
To run this program I recommend you first copy the contents of the card to a file in your machine. The easiest way is to use the dd command.
Instructions:
- Connect the camera or the flashcard to the computer.
- Check what is the mount point for your camera or the flashcard. You can use the mount command for this. For example in my computer the flashcard is mounted as device /dev/sdc1
dmg@platinum recoverPhotos]$ mount
[...]
/dev/sdc1 on /media/EOS_DIGITAL type vfat ...
[...]
Now, use dd to copy the flashcard to a file. For example, this command copies the contents of my memory card to a file called /tmp/card.bytes (You might need to run this command as root).
dd if=/dev/sdc1 of=/tmp/card.bytes
Make sure the device name (in this case /dev/sdc1) is correct!
The resulting file should have the same size as the flashcard.
./recoverPhotos /tmp/card.bytes
and check the output. Hopefully you will have a bunch of photos in the current directory. Run the program without parameters to see all the options available.
CANON USERS
If you use a camera that uses the custom function "Add Decision Data" (CF18 in the D20), and you are 100% sure it was on when you took the photos, then make sure you specify the --canonADD option. The option is not critical (it is not part of the photo), but the data is there if you want to recover it.
Enhancements:
- JPEG and Canon CR2 files are supported.

The gzip Recovery Toolkit attempts to automate the recovery of data from corrupted gzip files (including tarballs) through a program called gzrecover. gzip Recovery Toolkit package is still very experimental at this point.
99% of "corrupted" gzip archives are caused by transferring the file via FTP in ASCII mode instead of binary mode. Please re-transfer the file in the correct mode first before attempting to recover from a file you believe is corrupted.
This program is provided AS IS with absolutely NO WARRANTY. It is not guaranteed to recover anything from your file, nor is what it does recover guaranteed to be good data. The bigger your file, the more likely that something will be extracted from it. Also keep in mind that this program gets faked out and is likely to "recover" some bad data. Everything should be manually verified.
Usage:
Run gzrecover on a corrupted .gz file. Anything that can be read from the file will be written to a file with the same name, but with a .recovered appended (any .gz is stripped). You can override this with the -o option.
To get a verbose readout of exactly where gzrecover is finding bad bytes, use the -v option to enable verbose mode. This will probably overflow your screen with text so best to redirect output to a file.
Once gzrecover has finished, you will need to manually verify any data recovered as it is quite likely that our output file is corrupt and has some garbage data in it. If your archive is a tarball, read on.
For tarballs, the tar program will choke because GNU tar cannot handle errors in the file format. Fortunately, GNU cpio (tested at version 2.5 or higher) handles corrupted files out of the box.
Heres an example:
$ ls *.gz
my-corrupted-backup.tar.gz
$ gzrecover my-corrupted-backup.tar.gz
$ ls *.recovered
my-corrupted-backup.tar.recovered
$ cpio -F my-corrupted-backup.tar.recovered -i -v
If you have a previous release, please note that the patches to GNU tar have been discontinued. They were only marginally successful at best and GNU cpio does what is needed out of the box and does it far better.
Enhancements:
- Documentation updates, including a man page, plus code cleanup to better enable inclusion in GNU/Linux packages and eliminate compilation warnings.

File::Format::RIFF is a Perl module to Resource Interchange File Format/RIFF files.

SYNOPSIS

use File::Format::RIFF;

open( IN, file ) or die "Could not open file: $!";
my ( $riff1 ) = File::Format::RIFF->read( *IN );
close( IN );
$riff1->dump;

my ( $riff2 ) = new File::Format::RIFF( TYPE );
foreach my $chunk ( $riff1->data )
{
next if ( $chunk->id eq LIST );
$riff2->addChunk( $chunk->id, $chunk->data );
}
open( OUT, ">otherfile" ) or die "Could not open file: $!";
$riff2->write( *OUT );
close( OUT );

File::Format::RIFF provides an implementation of the Resource Interchange File Format. You can read, manipulate, and write RIFF files.

CONSTRUCTORS

$riff = new File::Format::RIFF( $type, $data );

Creates a new File::Format::RIFF object. $type is a four character code that identifies the type of this particular RIFF file. Certain types are defined to have a format, specifying which chunks must appear (e.g., WAVE files). If $type is not specified, it defaults to (four spaces). $data must be an array reference containing some number of RIFF lists and/or RIFF chunks. If $data is undef or not specified, then the new RIFF object is initialized empty.

$riff = File::Format::RIFF->read( $fh, $filesize );

Reads and parses an existing RIFF file from the given filehandle $fh. An exception will be thrown if the file is not a valid RIFF file. $filesize controls one aspect of the file format checking -- if $filesize is not specified, then stat will be called on $fh to determine how much data to expect. You may explicitly specify how much data to expect by passing in that value as $filesize. In either case, the amount of data read will be checked to make sure it matches the amount expected. Otherwise, it will throw an exception. If you do not wish it to make this check, pass in undef for $filesize.

Please note, if you wish to read an "in memory" filehandle, such as by doing this: open( $fh, read( $fh, $filesize );

The read constructor may also be used as a method. If used in this manner, then all existing data contained in $riff will be discarded, and replaced by the contents read from $fh.

$riff->write( $fh );

Outputs a properly-formatted RIFF file to the given filehandle $fh.

PerlPoint::Generator::LANGUAGE::Formatter is a Perl module that generates Formatter formatted LANGUAGE files.

METHODS

new()

Parameters:

class

The class name.

Returns: the new object.

genext2fs it generates an ext2 filesystem as a normal (i.e. non-root) user. It doesnt require you to mount the image file to copy files on it. It doesnt even require you to be the superuser to make device nodes or set group/user ids.
Enhancements:
- Cygwin and Mac OS X platforms are supported.

The mkCDrec utilities are optional for mkCDrec itself, but are an added value for rescue and recovery purposes.

The utilities are staticly compiled and include parted, memtest, partimage, gpart, and recover. Memtest86 is also available for memory testing.

To improve the added value of your recovery/rescue CD-ROM. You will notice that links from mkCDrec CD-ROM are foreseen to the /cdrom/utilities part of the CD-ROM and that man pages of these tools are already available within mkCDrec main toolset.

Without installing the utilities you cannot use them (obvious), but it will not break any other functionality of the mkCDrec tools. Therefore, a full restore remains possible (and disk cloning too), but you will not be able to resize a partition afterwards to name something.

Most of these utilities were compiled as static binaries, therefore, you can use those tools seperately too. If you know any tool which could useful to be included, please let me know... Since mkCDrec_utils_v0.5.7 you will notice that mkCDrec will use isolinux to boot from the CD-ROM instead of using syslinux floppy boot emulation.

But, this will only work if you use mkCDrec_v0.5.7 (or higher) as isolinux was first introduced in v0.5.7.

Parted

The famous Partition Editor of GNU software. The User Manual of parted is already part of mkCDrec.

Memtest

An excellent memory testing tool.

Partition Image

A tool to make/restore partition of msdos/vfat/ext2/reiserfs file systems. The primary purpose to include this tool is to allow a restore of old partition images made by this tool.

Gpart

Guess partition does what it implies. It can even recover destroyed partition tables, and therefore, maybe preventing a full restore. Useful in case if you do not make a mkcdrec on a regular basis.

Recover

An excellent tool to edit an EXT2 file system to recover lost files.

e2salvage

e2salvage is a utility which tries to recover a data from damaged ext2 partition. It may be used when e2fsck does not recover the broken ext2 filesystem. Before trying this tool read the man page (man e2salvage).

ext2resize

ext2resize, ext2prepare and ext2online are useful tools. ext2resize can increase (or decrease) the size of an unmounted ext2 filesystem. Be aware for ext2online one need a kernel patch (not likely installed). By the way, ext2resize does work too on an Ext3 filesystem! Be aware, one needs to apply S. Tweedies kernel patch (ext3) and an updated ext2 filesystem e2fprogs-1.20 or higher (which are ext3 aware). Last 2 requirements are of course only needed in case if you want to work with ext3 filesystems.

memtest86

Memtest86 is thorough, stand alone memory test for x86 architecture computers. BIOS based memory tests are only a quick check and often miss many of the failures that are detected by Memtest86.

chntpw

The offline NT password editor (chntpw) is a little program wich enables you to view and change passwords in a Windows NT SAM user database. For example,

Installation

# cd mkcdrec; tar zxvf mkCDrec_v0.7.9_utils.tar.gz
# ls -l utilities