On 5 Apr 2018 at 9:58, ToddAndMargo wrote: Subject: Re: OT:Question on NVME disk direct access? To: users@xxxxxxxxxxxxxxxxxxxxxxx From: ToddAndMargo <ToddAndMargo@xxxxxxxx> Date sent: Thu, 5 Apr 2018 09:58:34 -0700 Send reply to: Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx> > On 04/05/2018 08:36 AM, Samuel Sieb wrote: > > On 04/05/2018 12:59 AM, Todd Chester wrote: > >> If you what to completely blank a disk out, don't mess around with that > >> operating system whose name I shall not mention. (I hear it is slow, > >> buggy, and expensive.) Stay in Linux. > >> > >> # dd bs=1M if=/dev/zero of=/dev/sdx > > > > If I understood the original post correctly, the person was wanting to > > blank the free space, not erase the whole disk. The problem was that > > the program used was a secure eraser which filled the blank space with > > random data which doesn't compress. > > CLone Zilla skips over data that is not allocated, unless > your are LUKS encrypted. Goes like the wind! There are various options with programs. At the bit level imaging for a bare image restore, the OS of the disk are partition is not used, so it is just reading the raw data of all the sectors, so that a single pass restore gives everything. If one uses an option to access the data at the OS level, it can determine what is used or not. G4L includes ntfsclone for windows paritions, and fsarchiver for that and others, and it can backup data only, and is faster. Also, has options to change size of partitions. Bit level restores exactly the same size, but can be resized by other utilities afterwards. > _______________________________________________ > users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx +------------------------------------------------------------+ Michael D. Setzer II - Computer Science Instructor (Retired) mailto:mikes@xxxxxxxx mailto:msetzerii@xxxxxxxxx Guam - Where America's Day Begins G4L Disk Imaging Project maintainer http://sourceforge.net/projects/g4l/ +------------------------------------------------------------+ http://setiathome.berkeley.edu (Original) Number of Seti Units Returned: 19,471 Processing time: 32 years, 290 days, 12 hours, 58 minutes (Total Hours: 287,489) BOINC@HOME CREDITS ROSETTA 65145396.630944 | ABC 16613838.513356 SETI 109336776.035164 | EINSTEIN 141006633.999240 _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
