On 12/16/21 13:06, Steve Mysterious wrote:
> Earlier replies to this question suggested that the Fed EX photocopy/printer machines could not read vsdos formatted thumb drives if such drives were
> previously reformatted.
> I bought a new 1 gig thumb drive.
Possibly the problem. Flash memory does "wear out" over time, but with
good quality chips this usually takes a looooong time.
> I made sure to choose the "eject" option on my desktop before removing the new drive.
Most likely what the problem was. It has to do with how flash memory
works. It doesn't "erase" old files the same way that "rust" drives do,
and because of that a drive may be fast when it is new, but slows down
as it is used. This lets you get away with pulling the drive without
checking when it is new, but not when it has some "experience."
My experience is with Dolphin in the Mageia Plasma desktop, but the
Cinnamon file manager probably works the same way. When a file is copied
from one device to another, it goes through a buffer in the unused RAM,
waiting there while the (probably slower) destination device deals with
it. With Plasma, I get a notice that copying is complete when the entire
file is in the buffer, but before the drive has actually finished
dealing with it. If the flash device is pulled at that time, the file on
it will probably show as "damaged."
Using the "eject" or "safely remove" function lets you know when the
entire copy is actually on the drive.
> I did not put the files in a folder on the thumb drive.
I have three printers, so I never have a use for this Fedex service. I
can easily imagine a printer that can't deal with folders, but not one
at a business like Fedex. I do have a bit of experience with a
Photosmart printer that can print directly from a camera's memory card,
and every one of those cameras I've ever used uses folders, so I think
it would be unlikely that that's the problem.