how to restore hard disk after dd command.

anazli · 2016-07-18 16:31:28

Few weeks ago i tried to create a bootable usb and i did "dd bs=4M if=debian-testing.iso of=/dev/sdb1" instead of "sdb". After that the data on hard disk were deleted. I have installed arch and now the output of tune2fs is :

tune2fs: Bad magic number in super-block while trying to open /dev/sda
/dev/sda contains a iso9660 file system labelled 'Debian testing amd64 1'

the output of wipefs is:

offset type
----------------------------------------------------------------
0x1fe dos [partition table]

0x8001 iso9660 [filesystem]
LABEL: Debian testing amd64 1
UUID: 2016-06-13-07-01-05-00

and the output of fdisk -l is:

Disk /dev/sda: 232.9 GiB, 250059350016 bytes, 488397168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xd58f1ad9

Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 247130111 247128064 117.9G 83 Linux
/dev/sda2 247130112 471990271 224860160 107.2G 83 Linux
/dev/sda3 471990272 480192511 8202240 3.9G 82 Linux swap / Solaris
/dev/sda4 480192512 488396799 8204288 3.9G 82 Linux swap / Solaris

what should i do to remove the label and the iso filesystem?

jasonwryan · 2016-07-18 16:35:21

Not a Sysadmin issue, moving to NC...

frostschutz · 2016-07-18 16:39:34

anazli wrote:

i did "dd bs=4M if=debian-testing.iso of=/dev/sdb1" instead of "sdb".

Either command would have brought about the same result...

what should i do to remove the label and the iso filesystem?

wipefs -o 0x8001 ?

anazli · 2016-07-18 17:05:29

thank you!

Arch Linux

#1 2016-07-18 16:31:28

how to restore hard disk after dd command.

#2 2016-07-18 16:35:21

Re: how to restore hard disk after dd command.

#3 2016-07-18 16:39:34

Re: how to restore hard disk after dd command.

#4 2016-07-18 17:05:29

Re: how to restore hard disk after dd command.

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