| Christopher Barry on 5 Oct 2016 19:17:58 -0700 |
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| Re: [PLUG] Read only USB drive |
On Wed, 5 Oct 2016 19:21:31 -0400 JP Vossen <jp@jpsdomain.org> wrote: >On 10/05/2016 11:28 AM, George Zipperlen wrote: >> I'm looking for an in-hardware method to make a USB drive read-only. >> Either with a built in switch, or, via a small, inexpensive, USB >> 'sleeve' sitting between the drive and the USB port. >> >> Use case (1): A larger equivalent to CD-ROM or DVD Write Once Read >> Many, for archival backup. >> Use case (2): bootable USB sticks >> Use case (3): A way to safely distribute data, even their own (!) to >> an end user who might inadvertently trash something, or be using an >> OS which messes with any file system attached to a USB port. > >This probably does not answer all your use cases, and perhaps others >on the list can shed more light, but I have found that the so-called >"hybrid" ISOs I've "burned" to USB via dd are read only. The USB >stick itself is not but the file system on the stick *is* and while >you can reformat the stick to make it writeable again or just dd a new >ISO over top of it, I've not found a way to write one used in that >way. I should note I haven't tried either, I've just accidentally >reminded myself of the fact when I've booted one then tried to update >something. what are the automount options for that fs? readonly probably. what if you tried a remount rw? would that allow writing or is the fs a static structure in and of itself? > >See: >* https://www.debian.org/CD/live/ for examples >* >http://superuser.com/questions/683210/how-do-i-determine-if-an-iso-is-a-hybrid >* http://www.syslinux.org/wiki/index.php?title=Isohybrid > > >> Search on product sites like Microcenter.com led me nowhere. >> DuckDuckGo (Google) not particularly helpful, mostly junk and > > solutions in software. > >DuckDuckGo is not Google, they have their own crawler >(https://duck.co/help/results/sources). As much as I really want to >like them for being local and private, I just can't, because their >results have simply never worked for me. It's rare that duckduckgo does not satisfy my query completely in the first 5 records. it's my default in Opera 40 on sid, and android ff. sometimes if i'm having a hard time finding something, i'll jump to google to see, and it returns the exact same shit. I like and believe in the idea behind ddg. I support it and use it. It's great. And, it's right here in River City. Support the ecosystem. Google has just lost it's overall luster to me. dunno. >I use StartPage.com, which >*is* Google, except proxied with all the Google Evilness removed. And >even THAT doesn't always work, and I sometimes have to actually use >Google itself. > > >> I got a sense that USB sticks with a switch do >> (used to?) exist. After a few tries, I have no idea what keywords >> would find the 'sleeve' I described, if such a thing exists. Most of >> the matches involved software protection dongles; the closest I could >> find was expensive forensics hardware, which confirms my belief that >> this is technically feasible. > >Bergman's Amazon link to a forensics tool was this, and pretty cool, >but not cheap. > >Later, >JP >-- ------------------------------------------------------------------- >JP Vossen, CISSP | http://www.jpsdomain.org/ | http://bashcookbook.com/ >___________________________________________________________________________ >Philadelphia Linux Users Group -- >http://www.phillylinux.org Announcements - >http://lists.phillylinux.org/mailman/listinfo/plug-announce General >Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug -- Regards, Christopher ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug