Somebody writes: I was reading a rather heated discussion about Bleachbit on another forum. L for only 2 random passes, z eroes instead the last random pass. In the terminal: sfill to wipe free space from your home folder. Read about it in a forum, have not tested it yet. shred ignores write errors and happily continues in this case.įill a partition by copying movies from a DVD (or iso-files?) dd halts at the first bad block, and fails to clobber the rest (unless I painfully use skip=. sudo shred -v -n1 -z /dev/sdXĪdvantage of shred over dd in this scenario: I have a faulty disk that I need to return to the vendor for an exchange. You can also set all bits to zero after the last iteration by adding the option -z, I prefer to do this. This might take a while, depending on the size of your external hard drive (I think it takes twenty minutes or so for my 4 GB flash drive). You can add the option -n to only do this N times, to save time on large capacity devices. sudo shred -v /dev/sdX This will overwrite all the blocks on the device with random data three times, the -v flag is for verbose and will print the current progress. In the terminal: If wiping a whole drive is inconvenient, randomizing all the free space in a partition is a good second-best. Have not tested it yet, only read about it. Wipe unused (available) disk space on hard disks Overwriting the entire disk and installing a fresh operating system is the only way to be 100% certain that records of a file have been erased. Also be careful that the search itself does not leave a record! The probability that the file's contents may persist is lower, but not impossible. by using a command like grep -ab /dev/ on Linux) will tell you if the data is present in plaintext, but it won't tell you if some program has compressed or otherwise coded references to it. Some of you may be wondering, "Could I search the raw data on the disk to see if there are any copies of the data anywhere?" The answer is yes and no. Overwriting the entire disk is the only way to be 100% sure the name is gone. It is safe to assume that even if a file has been securely deleted, its name will probably continue to exist for some time on your computer. It's hard to know how to respond to this problem. In practice, there may be dozens of programs that behave like this. On a Linux or other *nix system, OpenOffice may keep as many records as Microsoft Office, and a user's shell history file may contain commands that include the file's name, even though the file has been securely deleted. Office might sometimes even keep temporary files containing the contents of the file. New hard drives: no technology currently exists that can read after even one overwrite.īut still: It is difficult, if not impossible, to securely delete both individual files and free space. Linux: Install Nautilus Wipe, open the Nautilus file manager, right click on file or folder, WipeĪndroid: Install Android Eraser, start it, free version wipes up to 10 MB a day Windows: Install Eraser, open Explorer, right click on file or folder, eraser, erase.Īlso erase available (free) space on all storage media: right click on the storage media … have not tested this yet if it does not destroy the system. Instead you either encrypt the entire volume and dispose of the key to wipe, or you destroy the device. Solid state hard drives: wear levelling means you cannot overwrite securely. This does not work for SDDs, flash drives, flash sticks, as their disk management stores the file in places which can not be addressed by other tools directly. Secure delete – erase – wipe for files and folders What I have found out (also by your answers) and tested partly. To install this using the PPA method, open a console terminal, type in, or copy & paste, each line below one by one:Ĭlick "Select All" above command, right click the highlighted command, select Copy (or Ctrl+Insert), click in the console terminal window, and right click paste (or Shift+Insert), repeat for each command. There are two versions of the file manager "double commander" a "GTK" and "QT" version. Ī Powerful Dual-Pane File Manager `Double Commander` New Update For Ubuntu/Linux Mint "Double Commander" per user "zootsocket" does indeed work worth "wipe" and other secure delete commands can be added easily in their configuration (shortcuts), nice. Qwipe - secure file delete (works as an app on any Linux Mint system) can be integrated with Dolphin and Konqueror file managers. I use Linux Mint KDE (17.3 and 18.1) and have added it to that using KDE options.Ĭertain applications also provide secure delete options like "Bleachbit", * PeaZip, etc. Most existing Linux Mint file managers can have a secure delete option added to their right click menu by adding that from the "Synaptic Package Manager (SPM)". Code: Select all sudo apt-get install secure-delete wipe
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