I've had NVME drives in usb enclosures disconnect under load; I don't know if it was because they weren't responding fast enough, or they shut off due to not being able to get enough power or due to heat. I've also had some SATA USB controllers for older drives not implement UAS properly and would disconnect because they weren't properly responding to commands.
If it's the later you could try disabling UAS; if that is the cause you'll loose a bit of speed but have a more reliable connection. I found this article <https://leo.leung.xyz/wiki/How_to_disable_USB_Attached_Storage_(UAS)> which explains well how to disable it. Also, you should be able to look in the journal to see why it disconnected. `journalctl -b` will give you the current boot logs and you can page down to the time it disconnected to see what happened. On Fri, Jul 4, 2025, at 8:56 AM, Michael via PLUG-discuss wrote: > I was looking for a picture on my backup media when the drive disappeared on > thunar. That made me scared! I thought I lost all my pictures. I unplugged it > then reinserted it but still it was not present. I switched ports but still > no good. I put it back the way I originally had it and all was good. Any > ideas as to why this would happen? > --------------------------------------------------- > PLUG-discuss mailing list: [email protected] > To subscribe, unsubscribe, or to change your mail settings: > https://lists.phxlinux.org/mailman/listinfo/plug-discuss >
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