Turn on HELP to get more info on the possibilities. Start the array in maintenance mode and from the Main page click on the disk which needs to be verified/fixed. unRAID6 has disk recovery tools built-in the GUI. Although I hope no one will need to use ddrescue permanently, the GUI is nevertheless a real help. Notifications are used to warn you in an early stage and prevent lingering problems. The GUI sets the important parameters, but not all of them by far. The key difference is that ddrescue uses a sophisticated algorithm to copy data from failing drives causing them as little additional damage as. ddrescue is not related to dd in any way except that both can be used for copying data from one device to another. I installed it quickly on my test Ubuntu using these three steps: sudo add-apt-repository ppa:hamishmb/myppaĪs Figure 1 shows, the interface is businesslike and functional. GNU ddrescue is a data recovery tool capable of ignoring read errors. There is also a GUI that you can use to make some quick, useful default settings. In the wake of ddrescue, there is still an armada of other parameters that control the tool's behavior. The command is just the same as before, except you leave out the -n parameter. The second, more time-consuming phase involves using the tool to sort through the faulty blocks and save as much data from them as possible. In the following example, /dev/sdd1 is a partition with read errors on a USB flash drive: sudo ddrescue -n /dev/sdd1 /home/charly/stick.img logfile.log This is the first of two basic tutorial videos for DDRescue-GUI. The first phase involves creating an image with all the data that can be accurately read. Two-Speed TransmissionĪdministrators usually use ddrescue in two phases. Unlike dd, however, it can't be stopped by read errors instead, it stubbornly saves everything that it can get its teeth into. The first two letters subtly indicate a relationship with dd, and ddrescue actually generates a data medium's or partition's image.

The tool is included with many popular distributions. (It should not be confused with the even older dd_rescue.) Ddrescue is officially named GNU ddrescue the packages on Debian and derivatives are therefore dubbed gddrescue.

The tool is already quite ancient, but its developers look after it untiringly and adapt it to new types of data media. What if really important data is stored on a haywire device that you just can't get rid of? This is where ddrescue comes in.

However, I didn't realize that my camera could save to two cards simultaneously – a feature I stupidly didn't use. I do know that memory cards give up the ghost sooner or later. I recently determined that an SDHC card in my camera saves one out of 20 images (on average) as a colorful mess of pixels. The Main window displays a block grid with. However, those undead data media – that trick people into continuing working on them with no idea of the potential impact – are a real pain. This small tool allows the user to graphically examine ddrescues log files in a user friendly GUI application. Krrr, krrr …! At least things are clear-cut when a hard disk gives up the ghost: You toss the offending disk, get a new one, and put the backup on it.

Use ddrescue gui