On 2010-07-16 23:43 +0300, Andrei Popescu wrote:
On Vi, 16 iul 10, 21:03:42, Andre Majorel wrote:
perl -e '$bytes = int (1e4 + 1e6 * rand);
for $n (1..$bytes) { $noise .= chr (int (rand (256))) }
while (print $noise) {}' /mnt/sdc1/zeros.bin; sync
dd if=/dev/random
Why calculate the sizes when you can just use cat until it stops
because the disk is full?
cat /dev/zero /mnt/yourfilesystem/thebigfile
BTW don't forget to proberly umount /mnt/yourfilesystem afterwards, of
course, to force a sync. (Just in case there might be a file system
that doesn't send
PS. and I personally would:
- either write a program that scans the partition for known fragments
of the files you want to be gone (perl with Sys::Mmap is an efficient
choice) to verify;
- or backup all good files from the partition, then overwriting the
block device, recreate the partition and
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On 07/15/2010 08:46 PM, Michael Iatrou wrote:
I am skeptical whether there is any good reason for tools like wipe2fs,
zerofree and friends (if there are any...), when a dd sync rm have the
same result.
You could say this about many things.
Mark wrote at 2010-07-15 15:55 -0500:
Do you have an example of what your wipe and wipe2fs commands are that
you've used? Didn't see much info on the websites here
[2]http://wipe.sourceforge.net/ or here
$ man wipe
There are even examples.
[3]http://web.cecs.pdx.edu/~cklin/wipe2fs/. Would
On 07/15/2010 11:05 AM, H.S. wrote:
I have a couple of hard disks in a computer which is to be recycled. I
want the windows OS in it to remain functional, but I want to be sure
that I have deleted all my personal files securely (never used the OS
that much anyway and there is hardly any
On 10-07-16 12:00 PM, Ron Johnson wrote:
Aren't you askig the wrong list?
The filesystem is vfat, files are being deleted from within Linux using
Linux tools and the partition just happens to be a Windows installation*
but could be any generic storage device. So, no.
I presume you are
On 07/15/2010 06:45 PM, Jordon Bedwell wrote:
Anything, and I repeat anything, is recoverable, even if you remove the
filesystem you can recover pieces of the file.
[citation needed]
When you do a low-level write to the disk, you're wiping out anything
and everything. One single pass of
On 07/16/2010 11:10 AM, H.S. wrote:
On 10-07-16 12:00 PM, Ron Johnson wrote:
Aren't you askig the wrong list?
The filesystem is vfat, files are being deleted from within Linux using
Linux tools and the partition just happens to be a Windows installation*
but could be any generic storage
On 16/07/10 01:01 PM, Ron Johnson wrote:
I don't think you can of= just the empty parts of your partition.
Attached is a Python script I use to zero out the free space of a
mounted partition.
Thanks for the script. You are basically writing 0xFF to the available
disk space. I used to have
When the date was Friday 16 of July 2010, Jordan Metzmeier wrote:
On 07/15/2010 08:46 PM, Michael Iatrou wrote:
I am skeptical whether there is any good reason for tools like wipe2fs,
zerofree and friends (if there are any...), when a dd sync rm
have the same result.
You could say
On 16/07/10 01:42 PM, Michael Iatrou wrote:
This is rather a philosophical question than a technical one: it is part of
UNIX mentality to have simple tools that can be put together to complete
complicated tasks. Practically seen, if the original poster was educated
with the principles of UNIX
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On 07/16/2010 01:42 PM, Michael Iatrou wrote:
This is rather a philosophical question than a technical one: it is part of
UNIX mentality to have simple tools that can be put together to complete
complicated tasks. Practically seen, if the
On Fri, Jul 16, 2010 at 9:10 AM, H.S. hs.sa...@gmail.com wrote:
On 10-07-16 12:00 PM, Ron Johnson wrote:
Aren't you askig the wrong list?
The filesystem is vfat, files are being deleted from within Linux using
Linux tools and the partition just happens to be a Windows installation* but
On 07/16/2010 12:38 PM, H.S. wrote:
On 16/07/10 01:01 PM, Ron Johnson wrote:
I don't think you can of= just the empty parts of your partition.
Attached is a Python script I use to zero out the free space of a
mounted partition.
Thanks for the script. You are basically writing 0xFF to the
On 16/07/10 02:03 PM, Mark wrote:
On Fri, Jul 16, 2010 at 9:10 AM, H.S.hs.sa...@gmail.com wrote:
On 10-07-16 12:00 PM, Ron Johnson wrote:
Aren't you askig the wrong list?
The filesystem is vfat, files are being deleted from within Linux using
Linux tools and the partition just happens
On 16/07/10 02:25 PM, Ron Johnson wrote:
Yeah, I guess you could write a bash script to:
1. determine the amount of free space.
2. Divide that by some efficient block size.
3. dd if=/dev/urandom of=${VFAT}/foo.bar \
obs=${BLKSIZ} count=${BLKCNT}
Coincidentally, that is exactly what I did
On 2010-07-15 13:55 -0400, H.S. wrote:
On 15/07/10 01:38 PM, Perry E. Metzger wrote:
dd if=/dev/zero of=/dev/scd bs=1M
Yes, but that would wipe out everything, the OS as well.
I was looking for just making the already deleted files
unrecoverable by a casual user. In other words, since a
On Vi, 16 iul 10, 21:03:42, Andre Majorel wrote:
If you're feeling paranoid, you could fill with junk instead of
NULs to protect against any optimisation at filesystem level.
bad joke about perlyep, that sure looks like junk/bad joke
perl -e '$bytes = int (1e4 + 1e6 * rand);
for $n
I have a couple of hard disks in a computer which is to be recycled. I
want the windows OS in it to remain functional, but I want to be sure
that I have deleted all my personal files securely (never used the OS
that much anyway and there is hardly any important info in its registry
or browser).
On Thu, Jul 15, 2010 at 12:05 -0400, H.S. wrote:
I have a couple of hard disks in a computer which is to be recycled. I
want the windows OS in it to remain functional, but I want to be sure
that I have deleted all my personal files securely (never used the OS
that much anyway and there is
On Thu, 15 Jul 2010 12:05:33 -0400 H.S. hs.sa...@gmail.com wrote:
I have a couple of hard disks in a computer which is to be
recycled. I want the windows OS in it to remain functional, but I
want to be sure that I have deleted all my personal files securely
(never used the OS that much
On 15/07/10 01:38 PM, Perry E. Metzger wrote:
On Thu, 15 Jul 2010 12:05:33 -0400 H.S. hs.sa...@gmail.com wrote:
Its first and second partitions (sdc1 and sdc2) are vfat. I was
thinking of mounting these on /mnt/scd1 (and scd2) and then doing:
# dd if=/dev/zero /mnt/sdc1/zeros.bin; rm -f
On 15/07/10 12:31 PM, Wolodja Wentland wrote:
Its first and second partitions (sdc1 and sdc2) are vfat. I was thinking
of mounting these on /mnt/scd1 (and scd2) and then doing:
# dd if=/dev/zero /mnt/sdc1/zeros.bin; rm -f /mnt/sdc1/zeros.bin
and the same for scd2. The idea is fill the
Take a look at shred (coreutils), wipe and secure-delete.
-t
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On Thu, Jul 15, 2010 at 9:05 AM, H.S. hs.sa...@gmail.com wrote:
I have a couple of hard disks in a computer which is to be recycled. I
want the windows OS in it to remain functional, but I want to be sure
that I have deleted all my personal files securely (never used the OS
that much anyway
On Jo, 15 iul 10, 13:55:21, H.S. wrote:
I was looking for just making the already deleted files unrecoverable by
a casual user. In other words, since a deleted file frees the space on
disk, by filling up the disk with all zeros and then deleting that zeros
file would be overwriting the
thib wrote at 2010-07-15 13:13 -0500:
Take a look at shred (coreutils), wipe and secure-delete.
+1 wipe; I have used it to wipe an entire block device.
Also wipe2fs for zeroing unused space; and zerofree seems very similar.
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On Thu, Jul 15, 2010 at 1:41 PM, green greenfreedo...@gmail.com wrote:
thib wrote at 2010-07-15 13:13 -0500:
Take a look at shred (coreutils), wipe and secure-delete.
+1 wipe; I have used it to wipe an entire block device.
Also wipe2fs for zeroing unused space; and zerofree seems very
On 07/15/2010 11:55 AM, H.S. wrote:
I was looking for just making the already deleted files unrecoverable by
a casual user. In other words, since a deleted file frees the space on
disk, by filling up the disk with all zeros and then deleting that zeros
file would be overwriting the earlier
When the date was Thursday 15 of July 2010, green wrote:
thib wrote at 2010-07-15 13:13 -0500:
Take a look at shred (coreutils), wipe and secure-delete.
+1 wipe; I have used it to wipe an entire block device.
Also wipe2fs for zeroing unused space; and zerofree seems very similar.
I am
On 7/15/2010 4:53 PM, Aaron Toponce wrote:
On 07/15/2010 11:55 AM, H.S. wrote:
I was looking for just making the already deleted files unrecoverable by
a casual user. In other words, since a deleted file frees the space on
disk, by filling up the disk with all zeros and then deleting that
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