-
dd_rescue for copying hard drives with bad sectors
I don't know if this has been covered before, but knoppix includes the program dd_rescue which is really a brilliant program for copying/imaging hard drives with bad sectors.
dd will give you lots of trouble when it encounters bad sectors, usually truncating the output or exiting when it gets a read error.
dd_rescue is much more forgiving.
"dd_rescue" without parameters will give you a list of command line parameters. Note that the command line syntax is much different from dd.
For example, "dd_rescue /dev/hda /dev/null" will copy from /dev/hda to /dev/null . I like to use this as a read test to see if an entire hard drive can be read.
I had a failing hard drive whose LBA sector 0 was completely unreadable. dd wouldn't even want to look at it. With dd_rescue I was able to get most of the good data off of this drive. Interestingly, knoppix 5.1 wouldn't even give me a /dev/hda in the device directory as it couldn't read the partition table in LBA 0 and kept retrying ad infinitum. I tried knoppix 3.9 and knoppix 6.0.1 and they would give me a /dev/hda even if LBA 0 was bad.
Similar Threads
-
By Zeroez in forum MS Windows & New to Linux
Replies: 5
Last Post: 11-26-2007, 05:02 PM
-
By fatblueduck in forum Hdd Install / Debian / Apt
Replies: 0
Last Post: 06-14-2005, 09:09 PM
-
By skwerl in forum Hardware & Booting
Replies: 2
Last Post: 05-31-2005, 01:08 AM
-
By Torriatte in forum General Support
Replies: 16
Last Post: 11-29-2004, 08:33 PM
-
By beajedi in forum Customising & Remastering
Replies: 13
Last Post: 06-05-2003, 09:55 PM
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
![ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301 picture](/store/img/g/J0AAAOSwSiVlu-xI/s-l225/ARUBA-J9772A-2530-48G-PoE-48-PORT-ETHERNET-SWITCH-.jpg)
ARUBA J9772A 2530-48G PoE+ 48 PORT ETHERNET SWITCH W/ RACK EARS J9772-60301
$140.23
![Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED picture](/store/img/g/kjQAAOSwNkhj0o7Y/s-l225/Fortinet-FortiSwitch-FS-124D-POE-24-Port-Gigabit-E.jpg)
Fortinet FortiSwitch FS-124D-POE 24 Port Gigabit Ethernet Switch UNREGISTERED
$99.97
![Loocam Gigabit PoE Switch 8 Port 96W 2 Uplink Port Unmanaged Ethernet Switch picture](/store/img/g/BUMAAOSwtOFjdfzi/s-l225/Loocam-Gigabit-PoE-Switch-8-Port-96W-2-Uplink-Port.jpg)
Loocam Gigabit PoE Switch 8 Port 96W 2 Uplink Port Unmanaged Ethernet Switch
$49.99
![TP-Link 24-Port Gigabit Ethernet Unmanaged Switch Desktop/Rackmount TL-SG1024D picture](/store/img/g/rvkAAOSwZBBi5CPU/s-l225/TP-Link-24-Port-Gigabit-Ethernet-Unmanaged-Switch-.jpg)
TP-Link 24-Port Gigabit Ethernet Unmanaged Switch Desktop/Rackmount TL-SG1024D
$55.99
![NETGEAR GS108 ProSafe 8-Port GbE Unmanaged Switch w/ Power Adapter picture](/store/img/g/GtAAAOSw441l3Jx1/s-l225/NETGEAR-GS108-ProSafe-8-Port-GbE-Unmanaged-Switch-.jpg)
NETGEAR GS108 ProSafe 8-Port GbE Unmanaged Switch w/ Power Adapter
$14.99
![NETGEAR ProSafe GS724T Rack Mountable Managed Gigabit Switch picture](/store/img/g/yaMAAOSwLZlmYjt~/s-l225/NETGEAR-ProSafe-GS724T-Rack-Mountable-Managed-Giga.jpg)
NETGEAR ProSafe GS724T Rack Mountable Managed Gigabit Switch
$20.00
![Cisco WS-C2960S-48TS-L 48 Port Gigabit Ethernet LAN Switch - Same Day Shipping picture](/store/img/g/pVEAAOSwkjpjh8my/s-l225/Cisco-WS-C2960S-48TS-L-48-Port-Gigabit-Ethernet-LA.jpg)
Cisco WS-C2960S-48TS-L 48 Port Gigabit Ethernet LAN Switch - Same Day Shipping
$29.95
![New 10/100 Mbps 8 Ports Fast Ethernet LAN Desktop RJ45 Network Switch Hub picture](/store/img/g/QyIAAOSwTM5Y5YBC/s-l225/New-10-100-Mbps-8-Ports-Fast-Ethernet-LAN-Desktop-.jpg)
New 10/100 Mbps 8 Ports Fast Ethernet LAN Desktop RJ45 Network Switch Hub
$11.49
![Netgear Prosafe 48-Port GbE & 4-Port SFP Managed Network Switch GS752TS picture](/store/img/g/hLYAAOSwc9xmdEiW/s-l225/Netgear-Prosafe-48-Port-GbE-4-Port-SFP-Managed-Net.jpg)
Netgear Prosafe 48-Port GbE & 4-Port SFP Managed Network Switch GS752TS
$59.99
![CISCO MERAKI MS120-24P-HW 24-PORT GIGABIT CLOUD MANAGED PoE SWITCH - UNCLAIMED picture](/store/img/g/uj4AAOSw8hhmYQRm/s-l225/CISCO-MERAKI-MS120-24P-HW-24-PORT-GIGABIT-CLOUD-MA.jpg)
CISCO MERAKI MS120-24P-HW 24-PORT GIGABIT CLOUD MANAGED PoE SWITCH - UNCLAIMED
$103.74