Date: Fri, 28 Aug 2015 00:06:02 +0200 From: Polytropon <freebsd@edvax.de> To: Quartz <quartz@sneakertech.com> Cc: freebsd-questions@freebsd.org Subject: Re: Stop using a SATA drive Message-ID: <20150828000602.b9a288a8.freebsd@edvax.de> In-Reply-To: <55DEFC74.3040609@sneakertech.com> References: <CAPi0psvT5aaHR7kU%2B28qwVDdutyMn7LjhFUGZRWctz4gGfgvgw@mail.gmail.com> <20150824214252.53aa04c6.freebsd@edvax.de> <55DEF869.1010202@sneakertech.com> <55DEFB5A.3080408@FreeBSD.org> <55DEFC74.3040609@sneakertech.com>
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On Thu, 27 Aug 2015 08:03:00 -0400, Quartz wrote: > > FreeBSD runs on all sorts of different kit from all sorts of different > > providers, hence the uniform interface that Apple has achieved is much > > harder. > > I can understand that argument for physically powering down a device, > but whether or not a particular item shows up in a particular directory > is entirely a software issue, isn't it? Yes - mostly the software inside the device, which we commonly call firmware. On USB, and to a certain extent, on SATA, the device identifies to the system and enters a communication with it: stating what device class, who built it, which model, what capabilities are available and so on. If the firmware is able to delete that connection (which is, after all, a _data_ exchange, not primarily an electric connection), the OS would act accordingly by removing the device file entry. But on the other hand, what's wrong with _ignoring_ a device file you don't want to have anything to do with? -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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