I found a solution for 2.5" HDDs but not for 3.5" as the "USB Mass Storage Device" entry doesn't show up in device manager for 3.5" HDDs.
Disabling 'Allow the computer to turn off this device to save power' will prevent HDD to go into sleep.
If anyone knows why "USB Mass Storage Device" doesn't...
I have two laptops (Windows 10) and a mini-PC (Windows 11) with external USB hard drives connected. The "Turn off hard disk after" setting is set to 10 minutes on all devices, but the drives turn off at different times on each machine. One shuts off around 2 minutes, another at 3, another at 6...
configuration
device management
energy settings
external storage
hard drive shutdown
hardware issues
mini pc
operating system
performance issues
power settings
rdp sessions
sleep timer
system update
troubleshooting
usb drives
user experience
version comparison
windows 10
windows 11
