Ddrescue - Revision history

Jaketeater: /* Other Resources */

2011-01-09T16:03:55Z

‎Other Resources

Pfuender: syntax fail.. ;-)

2010-06-25T12:09:35Z

syntax fail.. ;-)

Pfuender: linked to my blog containing some useful scripts/oneliners -- not sure if linking is allowed this way... else lmk!

2010-06-25T12:09:00Z

linked to my blog containing some useful scripts/oneliners -- not sure if linking is allowed this way... else lmk!

Arjun: /* Examples */

2009-11-15T02:57:14Z

‎Examples

Arjun: /* Examples */

2009-11-15T02:55:49Z

‎Examples

Arjun: Added a warning line to the examples section clarifying something that caused me to overwrite an entire disk by accident and lose a lot of data in the process.

2009-11-15T02:53:56Z

Added a warning line to the examples section clarifying something that caused me to overwrite an entire disk by accident and lose a lot of data in the process.

Angophora at 06:40, 17 July 2009

2009-07-17T06:40:10Z

Angophora at 07:21, 28 June 2009

2009-06-28T07:21:03Z

Angophora at 07:02, 28 June 2009

2009-06-28T07:02:09Z

Angophora at 06:56, 28 June 2009

2009-06-28T06:56:17Z

← Older revision		Revision as of 16:03, 9 January 2011
Line 185:		Line 185:

	== Other Resources ==		== Other Resources ==
−	[http://pfuender.net/?p=80\|Useful code-snippets for DDrescue]	+	[http://pfuender.net/?p=80\| Useful code-snippets for DDrescue]
		+
		+	[http://www.myfixlog.com/fix.php?fid=21\| Tutorial for beginners that guides through the process of imaging a hard drive with DDrescue and mounting it in Windows, using free software.]

← Older revision		Revision as of 12:09, 25 June 2010
Line 185:		Line 185:

	== Other Resources ==		== Other Resources ==
−	[[http://pfuender.net/?p=80\|Useful code-snippets for DDrescue]]	+	[http://pfuender.net/?p=80\|Useful code-snippets for DDrescue]

← Older revision		Revision as of 12:09, 25 June 2010
Line 183:		Line 183:
	* [[dd_rescue]]		* [[dd_rescue]]
	* [[sdd]]		* [[sdd]]
		+
		+	== Other Resources ==
		+	[[http://pfuender.net/?p=80\|Useful code-snippets for DDrescue]]

@@ Line 100: / Line 100: @@
 Example 1: Rescue an ext2 partition in /dev/hda2 to /dev/hdb2
-'''Please Note: This will overwrite ALL data on the partition you are copying to. If you do not want to do that, rather create an image of the partition to be rescued.'''
+'''Please Note:''' This will overwrite ALL data on the partition you are copying to. If you do not want to do that, rather create an image of the partition to be rescued.
 <blockquote>
 ddrescue -r3 /dev/hda2 /dev/hdb2 logfile<br>

@@ Line 100: / Line 100: @@
 Example 1: Rescue an ext2 partition in /dev/hda2 to /dev/hdb2
-'''Please Note: This will overwrite ALL data on the drive you are copying to. If you do not want to do that, rather create an image of the disk to be rescued.'''
+'''Please Note: This will overwrite ALL data on the partition you are copying to. If you do not want to do that, rather create an image of the partition to be rescued.'''
 <blockquote>
 ddrescue -r3 /dev/hda2 /dev/hdb2 logfile<br>
@@ Line 122: / Line 122: @@
 attempt to recover any bad sectors
   ddrescue -r 1 /dev/sda /dev/sdb rescue.log
 == Options ==

← Older revision		Revision as of 06:40, 17 July 2009
Line 120:		Line 120:
	attempt to recover any bad sectors		attempt to recover any bad sectors
	ddrescue -r 1 /dev/sda /dev/sdb rescue.log		ddrescue -r 1 /dev/sda /dev/sdb rescue.log
		+
		+
		+	== Options ==
		+
		+	-h, --help
		+	display this help and exit
		+	-V, --version
		+	output version information and exit
		+	-b, --block-size=<bytes>
		+	hardware block size of input device [512]
		+	-B, --binary-prefixes
		+	show binary multipliers in numbers [default SI]
		+	-c, --cluster-size=<blocks>
		+	hardware blocks to copy at a time [128]
		+	-C, --complete-only
		+	do not read new data beyond logfile limits
		+	-d, --direct
		+	use direct disc access for input file
		+	-D, --synchronous
		+	use synchronous writes for output file
		+	-e, --max-errors=<n>
		+	maximum number of error areas allowed
		+	-F, --fill=<types>
		+	fill given type areas with infile data (?*/-+)
		+	-g, --generate-logfile
		+	generate approximate logfile from partial copy
		+	-i, --input-position=<pos>
		+	starting position in input file [0]
		+	-n, --no-split
		+	do not try to split or retry error areas
		+	-o, --output-position=<pos>
		+	starting position in output file [ipos]
		+	-q, --quiet
		+	quiet operation
		+	-r, --max-retries=<n>
		+	exit after given retries (-1=infinity) [0]
		+	-R, --retrim
		+	mark all error areas as non-trimmed
		+	-s, --max-size=<bytes>
		+	maximum size of data to be copied
		+	-S, --sparse
		+	use sparse writes for output file
		+	-t, --truncate
		+	truncate output file
		+	-v, --verbose
		+	verbose operation
		+
		+	Numbers may be followed by a multiplier: b = blocks, k = kB = 10^3 = 1000, Ki = KiB = 2^10 = 1024, M = 10^6, Mi = 2^20, G = 10^9, Gi = 2^30, etc...

@@ Line 27: / Line 27: @@
 == Installation ==
 === Debian ===
-The package 'ddrescue' actually is [[dd_rescue]], another dd-like program which does not maintain a recovery log.
+=== Bootable CD ===
 <blockquote>
 aptitude install gddrescue
 </blockquote>
+Ubuntu
 == Partition recovery ==
@@ Line 105: / Line 117: @@
 copy the error free areas first
-  ddrescue -n /dev/sda /dev/sdb rescued.log
+  ddrescue -n /dev/sda /dev/sdb rescue.log
 attempt to recover any bad sectors
-  ddrescue -r 1 /dev/sda /dev/sdb rescued.log
+  ddrescue -r 1 /dev/sda /dev/sdb rescue.log

@@ Line 98: / Line 98: @@
 </blockquote>
 write cdimage to a blank CD-ROM
 This example is derived from the ddrescue manual.
-Example 3: Rescue an entire hard disk to another
+Example 3: Rescue an entire hard disk /dev/sda to another disk /dev/sdb
 copy the error free areas first
-  ddrescue -n /dev/source-disk /dev/destination-disk rescued.log
+  ddrescue -n /dev/sda /dev/sdb rescued.log
-attempt to recover from bad sectors
+attempt to recover any bad sectors
-  ddrescue -r 1 /dev/source-disk /dev/destination-disk rescued.log
+  ddrescue -r 1 /dev/sda /dev/sdb rescued.log