Questions tagged [shred]
The shred tag has no usage guidance.
25
questions
0
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0answers
25 views
How to mount a usb harddisk after a interrupted shred
Shred command was interrupted by a unrelated and user induced system halt.
Now I'm not able to see the harddisk using lsblk -l. Tried on multiple linux systems.
This answer (from External HDD detected,...
0
votes
1answer
31 views
Why is shred's -z option twice as slow?
I'm using shred to wipe a partition, and did some speed testing. My results were, in seconds:
6.4 using /dev/zero as the data source
6.5 shred's default raondom implementation
12.9 using shred's `...
27
votes
5answers
6k views
Is shred bad for erasing SSDs?
Whenever I sold a drive I've zeroed it once with shred from a live environment:
sudo shred -vzn 0 /dev/sdX
Before I double-checked it wasn't mounted. This is the fastest way to securely erase a drive ...
0
votes
3answers
270 views
Quicker alternative to Linux Wipe Command for secure deletion
I am fairly new to Linux but all I can say is I love it!!! :D
Anyways, I am trying to securely erase 1000s of files from my harddrive because new year is approaching and I want a fresh start to life. ...
-1
votes
1answer
87 views
CLI Linux with “shred” command
I am trying to find an OS that I can boot from my USB stick without further installation. I tried Tinycore but sadly I just couldnt save the Package "Coreutils" on it, so I had to reinstall it ...
0
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0answers
81 views
How to wipe a partition quickly with value zero? [duplicate]
I want to wipe a partition quickly.I search the answer in website.
such as:
dd if=/dev/zero of=/dev/sda1 bs=16M count=96
shred -v -z -n 1 /dev/sda1
But:
All the commandline,will overwrite with ...
0
votes
2answers
189 views
What does it mean to overwrite a file but keep it?
The wipe tool has the option -k Keep files, i.e. do not remove() them after overwriting.
What does that mean not to remove a file that was ... well... wiped?
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2answers
2k views
If I shred /dev/sda, do I delete partitions?
If I am wiping my /dev/sda harddrive, do I need to first repartition it (for example, with GParted), or will shred /dev/sda wipe the partition table too?
0
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2answers
455 views
Is the Secure Erase desired after the shred command? If so, how to do it properly?
I am about to sell a bunch of hard drives (not an SSHD or an SSD, all are normal HDDs).
As I wanted to overwrite it literally 10 times, I was unsure how to execute a pure pv overwrite * 10, so I came ...
2
votes
0answers
4k views
External Drive Recognized by `ls dev` but “no medium found”
I am trying to shred an old external hard drive using Linux Mint 17 (an Ubuntu-based distro) and a Vantec IDE/SATA to USB 3.0 adapter.
The system recognizes the presence of the drive. Here is the ...
1
vote
1answer
409 views
Making a Deleted folder Impossible to Recover [duplicate]
Suppose you visit a bad location on earth with your laptop.
Thieves are about to break in and steal your laptop.
So you run :
rm -rf /folder
but what if thieves have very advanced tools to recover ...
4
votes
1answer
211 views
How secure is data removal with rm followed by zerofree on the partition?
Instead of using srm, wipe or shred, one may simple unlink the file and run zerofree on the involved partition:
mount /dev/sda1 /mnt
rm /mnt/confidential_file
umount /mnt
zerofree /dev/sda1
How safe ...
5
votes
3answers
3k views
Secure delete folder CentOS 7
How do I securely delete a folder, with all of its contents, so it cannot be recovered?
I have tried the shred command but it only works with files and not folders.
I have also found out that there ...
0
votes
1answer
254 views
SMART test passed but I can see Hard Disk Broken Sectors in Disk Assesment
I have used shred on my HDD, but in the middle of that, I used Ctrl+C combination accidentally. After that I noticed bad sectors on Disk Assessment. I am using Linux mint 18 as my OS.
Using fsck, I ...
5
votes
1answer
3k views
How to securely delete data after rm
I deleted a file I meant to shred first.
$ rm somefile
instead of
$ shred somefile
$ rm somefile
Is there a way to shred a file after 'rm'-ing it?
1
vote
1answer
91 views
Wipe files from an external hard drive but not empty space
I'm using the following command to wipe an external drive.
sudo shred -v -z -n 1 /dev/sdb
Is it possible to wipe an external drive of the files and not empty space? So it would overwrite where there ...
2
votes
1answer
1k views
data recovery after partial shred
well i issued the following command:
shred -v /dev/sdb.
However I wanted to shred /dev/sda. I realized my mistake after about 2gb had been shredded (out of 2.7tb raid volume). what is the ...
1
vote
2answers
2k views
Automatically shred LUKS partition upon X failed decryption attempts?
Is it possible to set up a bootloader that automatically begins shredding the header.img file and then the encrypted partition itself upon X failed attempts at decrypting the partition?
If this does ...
1
vote
2answers
717 views
How to delete the whole root with rm rf and shred together?
My task is simple:
I need to able to delete the whole root which i can do with rm-rf ./* but the problem here is HFS recovery can get back the data since it is not actually deleted from disk
if i ...
2
votes
2answers
222 views
Did I unintentionally delete my entire hard drive?
A while ago I backed up a Linux folder onto a Windows disk drive I had lying around. Recently I was scanning through those files when I realized that I had unintentionally copied over many unwanted ...
2
votes
1answer
611 views
What can I (not) shred from root while it is mounted?
I am performing a test migration from old server to new one. Part of the procedure involves cleaning up the old server of any traces of passwords, php scripts and custom configurations while remotely ...
5
votes
3answers
2k views
How to securely delete a directory without leaving a trace?
I already know that using shred will overwrite my files in such a way that leaves them unrecoverable. However shred can't be used to hide directories.
Error Message:
failed to open for writing: Is ...
2
votes
3answers
411 views
How can I shred a git repository, reasonably fast?
I'm interested in accurately removing a git repository in a reasonable time.
But it takes quite a while to do so. Here, I have a small test repo where the .git folder is < 5MiB.
$ du -ac ~/tmp/....
2
votes
2answers
257 views
Shredding an external HDD
How do I shred the data on an external HDD? I am trying shred "/media/me/New Volume/" but I get failed to open for writing: Is a directory. Why?
7
votes
3answers
988 views
Effectivity of shred on different file systems
man shred warns that the command is not useful on file systems that don't overwrite in-place. I don't have much knowledge about the current and upcoming file systems, but I would suspect that many of ...
