Date: Tue, 25 Aug 2015 11:03:40 -0700 From: Charles Swiger <cswiger@mac.com> To: Polytropon <freebsd@edvax.de> Cc: FreeBSD - <freebsd-questions@freebsd.org> Subject: Re: Stop using a SATA drive Message-ID: <E8EC9FFB-192F-4E04-BA2E-719E329F73D6@mac.com> In-Reply-To: <20150825185151.d9373b1f.freebsd@edvax.de> References: <CAPi0psvT5aaHR7kU%2B28qwVDdutyMn7LjhFUGZRWctz4gGfgvgw@mail.gmail.com> <20150824214252.53aa04c6.freebsd@edvax.de> <CAPi0psu5pP_Z7FcR8h5cQAZiZyDmQTKWzFx-17tUEV5g-%2B7hjw@mail.gmail.com> <20150825162122.b770fc6a.freebsd@edvax.de> <CAJ-VmokqaVvoRhfpD_SrJEvkGU9JPJFhn%2BfTe_w%2BLE7LJFhUdA@mail.gmail.com> <20150825185151.d9373b1f.freebsd@edvax.de>
next in thread | previous in thread | raw e-mail | index | archive | help
On Aug 25, 2015, at 9:51 AM, Polytropon <freebsd@edvax.de> wrote: > On Tue, 25 Aug 2015 09:35:16 -0700, Adrian Chadd wrote: >> You can likely send commands to USB disks for "plz sync and power = down thx". >=20 > But it will be something the _device_ has to implement, I'd say. Sure. Every external USB hard drive needs to implement flush cache, = idle, standby, and sleep or else they'd lose data whenever folks had their machines go = to sleep. >> You can almost always turn off and on USB ports on your computer. >=20 > Including power? The mainboards that I owned usually did not > have settings for disabling USB ports and their power... > In most cases, power was available even when the board > had power, but the machine didn't run yet. Try a newer motherboard based off of the H97 / Z97 chipsets, or at least the prior H75/H77/Z75/Z77 generations. UEFI BIOS gives a whole lot more options for USB and SATA power management, including explicitly enabling or disabling power to individual ports either in UEFI at system boot or while running. Regards, --=20 -Chuck
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E8EC9FFB-192F-4E04-BA2E-719E329F73D6>