Date: Sat, 21 Nov 2020 22:13:33 +0100 From: Polytropon <freebsd@edvax.de> To: Ralf Mardorf <ralf-mardorf@riseup.net> Cc: freebsd-questions@freebsd.org, Polytropon <freebsd@edvax.de> Subject: Re: usb harddisk not working Message-ID: <20201121221333.19973dbd.freebsd@edvax.de> In-Reply-To: <20201121212613.153cfbda@archlinux> References: <b677a42e-a351-7fd5-24e8-770b251d6ba5@arcor.de> <20201121204425.86d9c6b1.freebsd@edvax.de> <20201121212613.153cfbda@archlinux>
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On Sat, 21 Nov 2020 21:26:13 +0100, Ralf Mardorf wrote: > On Sat, 21 Nov 2020 20:44:25 +0100, Polytropon wrote: > >This could be a wiring thing, but in my experience with cheap USB disk > >enclosings, it's probably a version of the firmware (the part that > >does "USB plug <---> SATA disk") that is not working properly and > >according to the standard. This can also explain the "works here, but > >not there" and "works sometimes, but not always". > > Hahaha, > > IIRC we already agreed off-list regarding USB enclosures and the > firmware a while ago. > > I can not remember that we discussed wiring issues. > > IMO it's super-very-most-unlikely a wiring issue. I can't imagine a > reasonable wiring issue. I wanteed to mention this because I experienced that once: It was a USB enclosure with the came it came with - worked sometimes, on some systems, but was hard to predict _where_ it would work _when_. Turned out, after removing the original USB cable and using a different one, the disk worked everywhere every time. :-) I called this "wiring issue" because the only thing involved is the wires in the USB cable. There _might_ be wiring problems within the enclosure (PCB to disk), but that doesn't seem to happen that often. Still a possibility. > In the beginning I disassembled the drives and connected them to my PC > to test, if the drives are broken. Nowadays I don't even test the > drives, I directly return such USB enclosures. I even don't waste time > to test another USB port ;), let alone another computer. In the past, I also solved "broken disk" issues by removing them from the enclosure and attaching them to my trusted JMicron universal adapter (for SATA, PATA, mini-PATA), using the original power supply. So far, that worked on _every_ computer's _every_ USB port. :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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