By default Windows 10 will power down hard drives after 20 minutes of inactivity (or if the computer is a laptop, 10 minutes when on battery).
For solid state drives (SSD) this has no affect, but for traditional mechanical hard drives, when this happens the hard drive will ‘spin down’ – reducing its power usage and giving the drive an opportunity to cool down.
Keep Drive Spinning For Mac
There are however two disadvantages – a slight delay for the drive to come out of ‘standby’ can make accessing files slower, and the process of turning the drive on and off could increase wear on the drive, reducing its life. Download mac os sierra from app store.
Keep Drive Spinning's script let's the drive stay active every minute or so. Anyone know what general effect that has on the entire OS' sleep settings? Download gotomeeting app mac. I kind of want the main system to still stay asleep after 15min, just not letting that drive spin down. Dorkington, if you are using Yosemite it will not work. I've got a 3.5' drive in a caddy that I use for backups. Up until a couple of weeks ago I could eject it in Windows and it would almost immediately spin down. Now, however, it's started behaving oddly. When I eject it, after Windows has confirmed it'.
If you want to change this, for example to change it to 30 minutes or completely turn it off you’ll need to go into the advanced power options.
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- In the Windows search box (bottom left of the screen), type ‘Power Options’
- Click on it when it appears in the list above
- Click on the ‘Change plan settings’ link for the currently active power plan (the bold one)
- Click on the ‘Change advanced power settings’ link
- Under ‘Hard disk’ you’ll find ‘Turn off hard disk after’. This is where you can control if and when the hard drives will power down after a period of inactivity. If you want to turn this feature off all together set this option to 0.
- Click ‘OK’ to save the changes.
Note that:
Why Is Hard Drive Spinning
- This option has no affect on a solid state drive (SSD)
- Hard drives will continue to spin down when the computer is in standby mode
Why Do I Spin My Driver So Much
The hard disk firmware is programmed to go into powersave mode on boot up. What you'll need to do is send the ATA commands to not stay in powersave mode, or like you said, give it dummy commands.
There is info over at PJRC on how to interface a PIC with an IDE drive, but it requires about 20 bits of IO to do it: http://www.pjrc.com/tech/8051/ide/wesley.html .
To do this in code, you'll need to (and this is all speculation based on reading the docs):
1] Read the status register until it indicates READY
2] Write 0xE3 to the command register
#1 is probably unnecessary. The write cycle looks like you need to set the following bits (copied from docs):
/CS0=0, /CS1=1, A2.A0=111B, D0.D7=0xEH - set write to command register with 'no Idle spindown' command
Then pulse the /WR pin low
The easiest way may just be to hook it up to a computer that allows you to set the idle times in BIOS, and do that. See if it saves it permanently.