Not spinning down HDs

I’ve just upgraded my RPi3 set-up to a RPi4 and the latest OSMC

I’m having an issue with the two connected hard drives not spinning down

Here’s the information on the drives from hd-parm:

osmc@osmc:/dev$ sudo hdparm -I sda1

>sda1:
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

ATA device, with non-removable media
Standards:
	Likely used: 1
Configuration:
	Logical		max	current
	cylinders	0	0
	heads		0	0
	sectors/track	0	0
	--
	Logical/Physical Sector size:           512 bytes
	device size with M = 1024*1024:           0 MBytes
	device size with M = 1000*1000:           0 MBytes 
	cache/buffer size  = unknown
Capabilities:
	IORDY not likely
	Cannot perform double-word IO
	R/W multiple sector transfer: not supported
	DMA: not supported
	PIO: pio0 

If I try and manually put the drive to sleep - this is what I get:

osmc@osmc:/dev$ sudo hdparm -Y sda1

sda1:
 issuing sleep command
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

I’m using the exact same HDs that I was using with OSMC on my Pi 3 - which did spin down

Hi, it might help to insert the whole hdparm -I output, here. Or is that all you get?

Hi - that’s all I get from hdparm-I