hi! yes, the hard disk has its own power supply. it’s separated from the one of the raspberry.
When the raspberry is on, the disk starts run but volumio doesn’t see it
Bus 001 Device 006: ID 22e8:170a
Bus 001 Device 005: ID 1058:1170 Western Digital Technologies, Inc.
Bus 001 Device 004: ID 059f:1028 LaCie, Ltd
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
there is a WD hard disk and a Lacie pen drive, but volumio doesn’t see anyone
Not even in this folder f97300db-5eed-38ed-bb78-5d41b5da25ae ?
How is the drive formatted? I would suggest you use ext4, or fat32 if you are using Windows. Possibly NTFS too, but that might need additional drivers.