How do i list the virtual disks currently in use by virtualbox?

[amurleopard]

$ vboxmanage list hdds
UUID:           5b6a6238-fd6f-4406-8a9b-123624524530
Parent UUID:    base
State:          locked write
Type:           normal (base)
Location:       /home/trainer/VirtualBox VMs/u1/u1.vdi
Storage format: VDI
Capacity:       5192 MBytes
Encryption:     disabled
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