Objects with object paths starting with
all represent disk drives,
typically physical disk drives.
Such objects implement the
D-Bus interface and may optionally implement other D-Bus interfaces such as
org.freedesktop.UDisks2.Drive.Ata depending on the drive in question.
A drive object should not to be confused with
objects (which are used for low-level block devices the OS
knows about). For example, if
/dev/sdb are block devices for two
paths to the same drive, there will be only drive object but
two block device objects.