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Groups > comp.os.linux.hardware > #3418

Disappearing USB drives

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I guess posting here is a long shot in view of the amount of traffic
in the group, but what's to lose? 

I'm trying to find the solution to USB drives 'disappearing' while
being accessed. I'm doing a backup (via sudo!) with a number of
recursive copy operations, and suddenly the copy will report that the
target filesystem is read-only, and then a few attempted copies after
that, the files will disappear, and it appears that the mount point
has no drive mounted there if an ls -a is run, but df still lists the
drive in its output. 

The drives affected are THREE different external USB drives, two
Western Digital 8TB drives and a smaller Seagate 2TB driver which has
been mounted in an external USB enclosure. 

The cure to the problem is simple. Either dismount and remount the
drive, which fixes it immediately, or wait about 20-30 minutes, when
the problem fixes itself spontaneously, the files reappear and the
drive goes back to write access. 

The good folks in the Ubuntu hardware group are baffled (I'm running
the latest Ubuntu-based Linux Mint, V19.3, on an AMD Phenom x2
six-core desktop). Is there anybody left here with any ideas? 

Brian. 
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Disappearing USB drives Brian <usenetposting@patandbrian.org> - 2020-05-19 08:39 -0400
  Re: Disappearing USB drives Joe Beanfish <joebeanfish@nospam.duh> - 2020-05-19 14:13 +0000
    Re: Disappearing USB drives Henrik Carlqvist <Henrik.Carlqvist@deadspam.com> - 2020-05-19 17:45 +0000
    Re: Disappearing USB drives mjb@signal11.invalid (Mike) - 2020-05-20 09:33 +0100
  Re: Disappearing USB drives jeffj@panix.com (Jeff Jonas) - 2020-06-28 02:37 +0000
    Re: Disappearing USB drives "Carlos E.R." <robin_listas@es.invalid> - 2020-06-28 13:45 +0200

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