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Here is the story buddies :
I dd'ed the wrong disk because of fdisk.
By disconnecting an reconnecting Usb and External HDD fdisk did not refresh results. The consequence is as you can see :
fdisk -l
Disque /dev/sdb : 14,5 GiB, 15552479232 octets, 30375936 secteurs
Unités : sectors of 1 * 512 = 512 octets
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00022e59
Périphérique Amorçage Start Fin Secteurs Size Id Type
/dev/sdb1 * 2048 30375935 30373888 14,5G c W95 FAT32 (LBA)
At this moment the external HDD is plugged in. ( i did not checked this, i know it sucks)
So i dd'ed the disk
dd bs=4M if=/home/spino/Isos/archlinux-2017.01.01-dual.iso of=/dev/sdb && sync
216+1 enregistrements lus
216+1 enregistrements écrits
909115392 bytes (909 MB, 867 MiB) copied, 0,95101 s, 956 MB/s
My eyes got a shady contact with the USB realizing the mess !
fdisk -l
Disque /dev/sdb : 931,5 GiB, 1000204885504 octets, 1953525167 secteurs
Unités : sectors of 1 * 512 = 512 octets
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 33553920 bytes
Disklabel type: dos
Disk identifier: 0x2eec075d
Périphérique Amorçage Start Fin Secteurs Size Id Type
/dev/sdb1 * 0 1775615 1775616 867M 0 Vide
/dev/sdb2 172 131243 131072 64M ef EFI (FAT-12/16/32)
Partition 2 does not start on physical sector boundary
So i did not touch anything and just look around to find a solution. I also checked these threads :
Here are my /proc/partitions after the disaster.
8 16 976762583 sdb
8 17 887808 sdb1
8 18 65536 sdb2
Do any of you gentlemen have any idea how i can recover the partition on sdb it was a single 900GB partition in NTFS.
I am currently scanning the disk with testdisk.
I can submit other details of course.
For those who are reading thanks in advance.
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Possible duplicate of Accidentally overwrote wrong disk with dd, how to recover?
– Tetsujin – 2017-02-15T09:59:36.310I think it is not exactly the same situation. My problem concern only One partition on a Drive shrinked by an Iso file and not another partition . The problem linked is not very clearly explained. – Dreamxast Alexei – 2017-02-15T10:09:37.600
It's NTFS, so you have the exact same issue as seen here: http://unix.stackexchange.com/a/283009/84179 :) Use my program (RecuperaBit) and you will get most of the stuff.
– Andrea Lazzarotto – 2017-02-16T18:12:45.9672
Possible duplicate of How to recover overwritten NTFS partition?
– Andrea Lazzarotto – 2017-02-16T18:13:53.297