On Tue, 2015-08-18 at 11:50 +1000, Fraser McGlinn wrote: > On 17/08/15 21:30, Helmut Walle wrote: > > > > And yes, for wiping disks something like > > > > dd if=/dev/zero of=/dev/sdx > > > > does the job (obviously replacing 'x' with the letter for the drive to > > be wiped). Without any further arguments, this will eventually fill > > the disk and terminate when running out of space. You can give is a > > block size "bs=..." and count=... to exactly fill the disk. > I definately agree with Criggie on this - You need to be a bit more > diligent in wiping your data. I prefer DBAN as well. If its an old drive > such as a PATA drive which will have no foreseeable use, i'd probably > demantile it and use the platters as coasters too. Also to grab the > magnets as a fiddle toy. > > We should be taking data security seriously since even stuff such as SSH > private keys, SSL private keys, DNS DNSSEC keys etc, are definitely > sensitive and can be used for years without rolling them to new ones. > > But at the end of the day, each to their own. I can't force others to > take data security seriously. > _______________________________________________
+1 for dban. nwipe can also do the job and is included in most distros, no need for a separate boot I can't remember where I read but there are ways to retrieve data after a dd fill with zeroes or something else by using photorec and some hardware forensic techniques. The only downside with dban and nwipe is that for relatively recent large HDDs it takes ages to finish. A while back I gave away 2x400GB SATA2 disks and one disk took 37 hours to wipe with dban. Adrian _______________________________________________ Linux-users mailing list [email protected] http://lists.canterbury.ac.nz/mailman/listinfo/linux-users
