[Hardware] USB Pen Drives That Often Don't Work

[Nunzio77]

Hi,
I've had several USB pen drives suddenly stop working, failing to mount, resulting in an error. Even with the repair tool, they don't work again. However, when I insert them into a Windows 10 or 11 system, the repair tool starts working again, even in Kubuntu.
What causes these USB pen drives to crash in Kubuntu?
If it's a bug, when will it be fixed?
I'm using Kubuntu 25.10.

[jlittle]

Are you strictly using the "safely remove" function before removing the USB sticks? Because Linux buffers i/o to available memory, dolphin and other tools will report a copy finished before writing to the USB has finished, long before with USB 2. There has been much discussion about this (IMO) misfeature.