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2 votes
4 answers
4k views

How does writing zeroes to a drive remove data from it?

I know a fair bit about the process of securely wiping drives, including that one wipe is usually sufficient and that no-one has yet (publicly) been able to recover a bit of data from one pass of ...
Hashim Aziz's user avatar
  • 13.1k
0 votes
1 answer
425 views

linux shred does not remove traces of filename even after truncate/removal?

I'm testing the coreutils /usr/bin/shred command. It leaves traces of a file's name even though I told shred to "truncate" (remove) the file. I was assuming that shred would remove all the metadata ...
Vahid Pazirandeh's user avatar
0 votes
1 answer
69 views

How to erase any kind of files after formating and installing Fedora 27 Workstation

How can I safely erase files that could potentially be recovered after a hard drive format and installation on a Fedora 27 workstation? I was using Windows 10, and everything that I had in Windows 10 ...
Tales's user avatar
  • 1
1 vote
1 answer
1k views

How to securely erase HPA, DCO, and any bad sectors of a SCSI HDD

Does dd if=/dev/zero of =/dev/cciss/c0d0 bs=1M wipe over the HPA, DCO, and any bad sectors?
oshirowanen's user avatar
  • 1,740
7 votes
3 answers
9k views

Zeroing a file from command-line

Is there a built-in command in Windows 7 or higher to fill a file with zero / NULL bytes? The processing should happen in-place (i.e. it should modify the actual disk sectors / bytes of the file), ...
Basj's user avatar
  • 1,916
3 votes
2 answers
2k views

Securely erase empty disk space on a Win 3.1 / DOS 6.22 system with builtin tools

I have a retro laptop from 1994, an IBM Thinkpad 340, which I want to give away, but first want to securely erase its deleted files. The system contains both a GUI and CLI undelete application, which ...
porg's user avatar
  • 389
5 votes
1 answer
3k views

SDelete: where to get the physical disk number from?

Until recently, I have deleted hard disks this way: Delete all partitions in Windows Create a single partition for the whole drive Assign a drive letter Run sdelete -z with the drive letter New ...
Thomas Weller's user avatar
0 votes
1 answer
321 views

how to erase sensitive data "permanently" if hd broken and cannot do full random overwrite?

I purchased a broken hard drive. I copied some of my movies on it. It is broken now. I want to send it back to the factory. I wanted to permanently delete all my files with "Sdelete" secure tool. ...
kristof2014's user avatar
3 votes
3 answers
11k views

Erase all data from Samsung laptop

I am selling my old Samsung laptop which I got in 2009, and I would like to erase all data. When I press F4 and go to Samsung Recovery and choose the restore, it restores my computer to the same state ...
Jarno's user avatar
  • 133
3 votes
5 answers
3k views

Are there options for disk wiping software that do not require booting into the software first?

I have an external hard disk and a HDD that was formally internal but is now connected via a SATA-to-USB adapter. I'd like to wipe both drives, but I feel uncomfortable booting into DBAN and other ...
Wuschelbeutel Kartoffelhuhn's user avatar
3 votes
2 answers
3k views

Difference between DBAN and dd command to securely wipe a HDD

I have read about dd and see that it can be used to securely wipe a HDD. But there is also a program called DBAN to wipe the HDD as well. I know that using a live gnu-linux ISO I can wipe my HDD by ...
destan's user avatar
  • 1,147
4 votes
3 answers
2k views

Linux format hard disk, the data should not be recoverable

I am new to Linux. Can any one give me a suggestion on how to format hard disk. That is I need to clean the data, data should not be recoverable again. It should be permanently deleted.
user avatar
3 votes
5 answers
11k views

How to quickly and effectively wipe a Win7 x64 hard drive

I have a Windows 7 Enterprise x64 system and need to wipe the 1.5TB hard disk drive quickly and effectively. Quick, I guess, is a relative term; so more quickly than I've seen with some wipe utilities ...
Alex's user avatar
  • 1,307
2 votes
2 answers
477 views

Data Shredder software [closed]

We use "eraser" and "o&o safe erase" to shred important documents on hard disk. Does anyone use another software in Windows for wiping, what are the advantages ? Thank you very much.
trante's user avatar
  • 553
34 votes
5 answers
35k views

Is using multiple passes for wiping a disk really necessary?

To stupid people, like me, you would have thought overwriting each bit on a disk would render the data completely unrecoverable. Why do disk wiping tools have the option for multiple passes, i.e. 3 ...
Kez's user avatar
  • 16.8k

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