Re: 35 pass erase
> As a physicist working for the US Navy at a time well before the IBM > peecee appeared, let alone Windows, we wanted to use the computers on > Minuteman missiles that were being decommissioned. The idea was that > everyone in the laboratory could have a machine on his desk as opposed to > using a dumb terminal or flexowriter attached with an RS 232 pair to the > big machine. Plenty of talent was available to handle the software. > > What a great idea that was not to happen. A number of those were sold on the used market to all-comers. Sometime, our government has NO IDEA that which is "strategic" and that which is "surplus". I kid you, not. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
At 15:49 -0700 5/15/12, Bruce Johnson wrote: > >Gotta love Wikipedia! I clicked on the 'srm' link in the above article to find >this helpful suggestion: > >"The US government recommends complete physical destruction of hard disk data >surfaces to guarantee secure data erasure. Presumably, this can be >accomplished by abrasion, or by a small amount of thermite ignited over a >large, well-ventilated pot containing sand." > As a physicist working for the US Navy at a time well before the IBM peecee appeared, let alone Windows, we wanted to use the computers on Minuteman missiles that were being decommissioned. The idea was that everyone in the laboratory could have a machine on his desk as opposed to using a dumb terminal or flexowriter attached with an RS 232 pair to the big machine. Plenty of talent was available to handle the software. What a great idea that was not to happen. It appeared that the very special disks, that were needed for any kind of operation, once had targeting information on them that nobody knew how to erase with certitude. They got crushed along with the computers. -- 1801 - Joseph Marie Jacquard uses punch cards to instruct a loom to weave "hello, world" into a tapestry. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
On May 15, 2012, at 2:53 PM, irrational John wrote: > See http://en.wikipedia.org/wiki/Gutmann_method#Criticism where they > quote Gutmann himself criticizing the simple-minded way it is > typically used. Gotta love Wikipedia! I clicked on the 'srm' link in the above article to find this helpful suggestion: "The US government recommends complete physical destruction of hard disk data surfaces to guarantee secure data erasure. Presumably, this can be accomplished by abrasion, or by a small amount of thermite ignited over a large, well-ventilated pot containing sand." -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
On Tue, May 15, 2012 at 1:08 PM, wrote: > One wipe is really enough though, but standards are standards > unfortunately :/ Perhaps. But this 35 pass nonsense is not even a proper standard. It's more of an intellectual excise built around drive technologies. See http://en.wikipedia.org/wiki/Gutmann_method#Criticism where they quote Gutmann himself criticizing the simple-minded way it is typically used. "In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques." -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
> The macintel list seems to be the one intel-based LEM list with decent > traffic. Pretty soon non-Ivy Bridge Intel Macs (and the Hack clones of pre-Ivy Bridge) will go the way of the others, too. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
On May 15, 2012, at 11:42 AM, peter wrote: > When I first got my G4, from a coworker in 2001, he coldn't find the system > disk for about a month and a half. By then, I had, been using it, and didn't > want to do a nuke and pave. I still find his junk files now and then on my > tiger partition. So I will be glad to have a clean start this time. > > Thanks for the reassurance about the drives though. > > As an aside, since the macpro list is dead, and the prices are comming down > on the first models, and they are loosing apple support with mountain lion, > they are starting to turn into LEMs, is this where we should discuss issues > with them? The macintel list seems to be the one intel-based LEM list with decent traffic. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
When I first got my G4, from a coworker in 2001, he coldn't find the system disk for about a month and a half. By then, I had, been using it, and didn't want to do a nuke and pave. I still find his junk files now and then on my tiger partition. So I will be glad to have a clean start this time. Thanks for the reassurance about the drives though. As an aside, since the macpro list is dead, and the prices are comming down on the first models, and they are loosing apple support with mountain lion, they are starting to turn into LEMs, is this where we should discuss issues with them? -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
On May 15, 2012, at 9:55 AM, peter wrote: > > My understanding is that this writes 0s then 1s alternately to every drive > sector for 35 passes. As this is way more than years of normal ussage would > do, what can I expect for drive life out of these things. If the drive lives through this it's probably a good drive...at this it's better than my first PowerPC mac, an old G3 that was decommissioned from Motorola back in the 90's...they simply removed the drive (sled and all, dammit!) and tossed it in a big shredder. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
Re: 35 pass erase
Those standards are suspect to start with, but you should be fine. I've done it for my employer on machines that haven't had a disk failure in years, which is unusual seeing as they're HP :P One wipe is really enough though, but standards are standards unfortunately :/ - Original Message - From: peter To: g3-5-list@googlegroups.com Sent: Tue, 15 May 2012 16:55:42 - (UTC) Subject: 35 pass erase Part of this needs to invoke the 1 step removed rule, but partly it is a general question as well. I have purchased my first intel, a MacPro 3.1 on eBay. There has been some delay in the shipping because the origional owner wanted to be sure of security, and ran a 35 pass erase on both HDDs, from the leopard install disk. One drive is the origional and the other is a 1TB. My understanding is that this writes 0s then 1s alternately to every drive sector for 35 passes. As this is way more than years of normal ussage would do, what can I expect for drive life out of these things. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
35 pass erase
Part of this needs to invoke the 1 step removed rule, but partly it is a general question as well. I have purchased my first intel, a MacPro 3.1 on eBay. There has been some delay in the shipping because the origional owner wanted to be sure of security, and ran a 35 pass erase on both HDDs, from the leopard install disk. One drive is the origional and the other is a 1TB. My understanding is that this writes 0s then 1s alternately to every drive sector for 35 passes. As this is way more than years of normal ussage would do, what can I expect for drive life out of these things. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list
