Did anybody ever try to copy a hundred GB to an external USB HD

[bernd.k]

Post the dmesg errors.

Here is a link:

Unable to use external USB2 drive connected to the USB3 port

This is how it looks when it happens: Plug in the drive: [Tue Jan 30 22:14:10 2018] usb 1-1.3: new high-speed USB device number 43 using orion-ehci [Tue Jan 30 22:14:10 2018] usb-storage 1-1.3:1.0: USB Mass Storage device detected [Tue Jan 30 22:14:10 2018] scsi12 : usb-storage 1-1.3:1.0 [Tue Jan 30 22:14:11 2018] scsi 12:0:0:0: Direct-Access SAMSUNG HD204UI PQ: 0 ANSI: 2 CCS [Tue Jan 30 22:14:11 2018] sd 12:0:0:0: [sdd] 3907029168 512-byte logical blocks: (2.00 TB/1.81 TiB)…