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Date:      Thu, 20 Aug 2020 19:15:03 +0200
From:      Polytropon <freebsd@edvax.de>
To:        freebsd@dreamchaser.org
Cc:        freebsd-questions@freebsd.org, Manish Jain <bourne.identity@hotmail.com>, Christoph Kukulies <kuku@kukulies.org>
Subject:   Re: Correct way to disconnect/eject an USB hard disk ?
Message-ID:  <20200820191503.8abbe633.freebsd@edvax.de>
In-Reply-To: <e3504a56-18f9-6da2-63a0-b61251a4ea42@dreamchaser.org>
References:  <C6B11926-65BE-4A05-B421-9F3E9C9AACF6@kukulies.org> <20200819142952.3686baa8.freebsd@edvax.de> <DB8PR06MB64427319E175193D1B828135F65D0@DB8PR06MB6442.eurprd06.prod.outlook.com> <b9b46ecb-b1ef-8f67-7b41-ae3cf0d3864b@dreamchaser.org> <20200820044352.678a588e.freebsd@edvax.de> <20200820050222.e54467e3.freebsd@edvax.de> <e3504a56-18f9-6da2-63a0-b61251a4ea42@dreamchaser.org>

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On Thu, 20 Aug 2020 10:56:56 -0600, Gary Aitken wrote:
> But on a mostly unrelated note, I have a ritual I've been performing for =
nigh
> on ten years:
>=20
> Before plugging in a USB stick on one particular box, I stick a finger ov=
er the
> USB stick connection, touch the box/case and run my finger down to the fr=
ont
> panel USB connector and wiggle my fingertip over the connector.  Then plu=
g in
> the stick.  If I don't do that, 9 times out of 10 the machine will freeze=
 up
> and I have to manually power off, reboot, and fsck.

I had a comparable problem many years ago with a USB-based
SD and CF card reader: It was required to first plug in the
USB-A plug to the computer, then the card reader to the
USB-mini-B plug of the cable - worked. If the reader was
connected to the cable already, and it was plugged into
the computer, the system would freeze. That was very strange,
so I left the USB cable connected to the system, and only
connected the card reader when needed.

There is another important ritual:

First try to connect the USB-A plug. You'll immediately
recognize that it was upside down. So you turn it 180=B0 and
retry. Again it does not fit, so you turn it 180=B0 again and
retry. It will now fit. :-)

It might apply to all kinds of USB plugs (and in case of
USB-B, it needs 4 x 90=B0 turns to make it fit...




--=20
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...



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