I plugged a 2,5" USB external 500GB hard drive to a Raspberry Pi 2 (Model B Rev 1.1), but it is not detected:
there is no
lsblkdoes not display the disk
lsusbshows a few things, but I don't know which lines are specific for disks
/boot/config.txt, but it did not change anything.
I can hear the drive working/running.
I suspect the power supply is not powerful enough, so I'll try another one, but is there something else I can try?
Note: the disk is NTFS, but I don't think this is the reason for which
/dev/sda1 is not present. Even if the FS is not readable, I should at least see the disk, and then, be able to reformat it to EXT4, is it right?