On 02/08/16 15:34, Wes James wrote: > Is there a utility to zero unused blocks on a disk? > > CentOS 6.7/Ext4 > > I saw zerofree, but I’m not sure it would work on Ext4 or even work on > this version of CentOS. > > thanks, > . a comment on replies to your post. i find it interesting that "Subject:" is and you ask for info to *zero unused blocks on disk* and all the replies for wiping the _entire_ disk. why is so hard to understand that _blocks_ does not mean _disk_. ((GBWG)) -- peace out. If Bill Gates got a dime for every time Windows crashes... ...oh, wait. He does. THAT explains it! -+- in a world with out fences, who needs gates. CentOS GNU/Linux 6.7 tc,hago. g .