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How to Wipe Clean A HD. Really Clean!

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linux-howto

http://www.linuxforums.org – Hello! I have an old IDE HD (80G) w/c I have recovered some family photos & some music files from using Parted Magic. I used an IDE/SATA to USB cable. It was the first time I did such and was surprised to see that aside form the pictures and mp3s, my old personal & business files still can be recovered even after deleting and even reformatting said HD. I will be putting this HD back to the old laptop and send to the shop for some minor repairs and eventually give it to a friend. May I please ask on how to wipe/shred/overwrite the HD so as to totally make it impossible to recover anything from it? Like sort of how to make it really clean. I read in this forums about "dd" but am not yet familiar with it. Thanks guys! Code: [jun@localhost ~]$ sudo fdisk -l [sudo] password for jun: Disk /dev/sda: 250.0 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0xc5e3f820   Device Boot      Start        End      Blocks  Id  System /dev/sda1  *          1        1555    12490506    7  HPFS/NTFS /dev/sda2            1556      15817  114559515    5  Extended /dev/sda3          15818      30401  117145980    7  HPFS/NTFS /dev/sda5            1556        4768    25808391  83  Linux /dev/sda6            4769        5558    6345643+  82  Linux swap / Solaris /dev/sda7            9380      10144    6144831  83  Linux /dev/sda8            6731        8285    12490506  83  Linux /dev/sda9            5559        6730    9414058+  83  Linux /dev/sda10          8286        9379    8787523+  83  Linux /dev/sda11          10145      15817    45568341  83  Linux Partition table entries are not in disk order Disk /dev/sdb: 80.0 GB, 80026361856 bytes 255 heads, 63 sectors/track, 9729 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0xa282a282   Device Boot      Start        End      Blocks  Id  System /dev/sdb1              1        9553    76734441    6  FAT16 /dev/sdb2            9554        9729    1413720    5  Extended /dev/sdb5            9554        9729    1413688+  6  FAT16 [jun@localhost ~]$ (HowTos)