bs = block size in bytes where suffix K= kilobyte (1024), M = megabyte (1024×1024), G = gigabyte, etc.X is target drive letter – use sudo fdisk -l to discover drive designation.Or wipe with random numbers use: cat /dev/urandom | pv -brtp -s 1T | sudo dd of=/dev/sdX bs=64M status=progress Or without PV using DD built in progress option sudo dd if=/dev/zero of=/dev/sdX bs=64M status=progress This error notes completion and is OK.ĭisplay progress with PV (Pipe Viewer) – examples for a 1TB drive cat /dev/zero | pv -brtp -s 1T | sudo dd of=/dev/sdX bs=64M Writes to the drive until it runs out of space at which point you get an error To wipe drive with endless stream of zeros use: However preferable to 10s of hours with repeated patterns. With large terabyte drives even writing with zeros can take several hours. Even just writing with zeros makes it nigh impossible to recover as the memory bits have been reset. This method is suitable for USB pen drives. /dev/sdX is the target device where X from fdisk example above would equate to /dev/sda.As the default is 3 “n 3” in above example can be omitted z = add a final overwrite with zeros to hide shredding. f = force change of permissions if necessary.If you are paranoid about the memory reliability let it run overnight.įrom the main menu select the default boot option to boot Xfce desktop and run the following commands from Terminal: umount /dev/sdX One Pass is normally sufficient to prove the memory is OK. If you do nothing Memtest86+ will continue to run. ** Pass complete, no errors, press Esc to exit ** If no memory faults are found you will get a message at the bottom of the screen that says: If Memtest86+ hangs without any memory area indication re-run in Fail-Safe mode. Memory errors will be shown up in Red with corresponding ram area or it may hang in the defect ram area. If you have a quad core processor in Mult-Core mode the memory test will run approximately 4 x faster. To run Memtest86+ select “MEMTEST” from the system tools menu aboveĪs soon as Memtest86+ starts press F2 (within 5 seconds) for multi-core mode or F1 Fail-Safe mode (single core). Memtest86+ program will tell you if your physical memory is damaged or not. Select the default (1st option) for standard Linux OS or the System Tools Menu to run a specific tasks which are explained below: Once SYSRESCUE is booted it displays a number of bootable Linux options. After creating label the media SYSRESCUE. To create the USB stick boot version you need at least a 512MB usb stick and may need to edit the target machine BIOS boot order to ensure the USB drive boots before the internal drive or hit the appropriate function key (usually F12) on boot to change the boot order. However this does have some useful extras which make it a bit easier to use, e.g. Many of the rescue applications are also available on standard Live CD/USB’s which circumvent the need for this particular CD/USB. It aims to provide an easy way to carry out admin tasks, such as creating and editing the hard disk partitions, testing memory and disks, recovering files and partitions plus a multitude maintenance tasks. SystemRescueCd is based on Xfce (cholesterol free Linux) OS provided as a bootable CD or USB for administrating or repairing desktop systems after a crash.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |