My thanks to all those who theorise that it was this particular drive's time to die. It is several years old and I was thinking along the lines that the rest of you were thinking. One thing I haven't done yet is to see if the clock crystal that drives the internal usb controller is still active. I am not sure what frequency it should free run on but one can sometimes hear the clock on a general-coverage short wave radio receiver or scanner-type receiver.
What one hears is a signal that usually sounds like a continuous carrier with no modulation. It's there when the drive is powered up and goes away when the drive is disconnected. Thanks. Martin WB5AGZ local10 <loca...@tutanota.com> writes: On 2020-04-01 18:07, Martin McCormick wrote: > > >> Out of curiosity, I wondered what might happen if I had > >> two thumb drives containing the same UUID. > >> > > Nothing bad really unless the system is supposed to boot from one of them > and both are present in the system at boot time. > > I have two HDDs (main one and backup one) where partitions on the backup > HDD have the same UUIDs as partitions on the main HDD. This was done on > purpose to simplify backups and to have backup HDD to be readily > available to replace the main HDD. I copied data between the two of them > many times without any issues whatsoever. > > If necessary, you can change UUID with tune2fs: > # tune2fs /dev/{device} -U {uuid} > > Regards, > >