I think this happens when inserting and quickly removing a USB; the USB is no longer recognized when inserting the USB again. The USB light will turn on and immediately turn off. Neither "dmesg | tail -20" or "sysctl hw.disknames" will provide any info when the USB is inserted. All USB and external drives will not be recognized until the system is rebooted. Once rebooted the USB will be recognized again on all usb ports.
(I could not "sendbug"from the original laptop as when closing the editor and after selecting the option i would get ^M after pressing enter to send). Thxs !
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