Hello Jason, On Tue, Aug 24, 2021 at 6:42 PM Jason Mitchell <jmitc...@bigjar.com> wrote: > > On 8/24/21 11:25 AM, Riza Dindir wrote: > > Hello > > > > When I power off the system (with poweroff) the connected USB HDD > > makes a noise that comes from the heads. A distinct clicking noise. > > > > I wanted to know if there is a way, when powering off the system, any > > usb hdd drive that is connected to the system be stopped properly, and > > the disk heads are parked? > > > > On windows there is a disconnect usb drive menu item in the system > > tray for the usb drive. Something similar on netbsd? > > > > Best Regards > > Riza Dindir > > Riza, > > Today's Hard Drives all park their heads automatically. As for, the > "disconnect usb drive task in Windows", just detaches the hard drive > from the OS. So the clicking noise you hear is caused by the commands > sent to the HD from the OS. I think that Windows says "I'm done talking > to you" and the drive decides to park its heads. > > The NetBSD equivalent would be un-mounting the drive (umount). If you're > writing to the drive outside of the filesystem (very rare except for > fdisk, disklabel, and creating wedges), then the sync command will make > sure that all data is written to all disks. The command won't complete > until this is done. If you're paranoid like me, you can type it multiple > times :)
Yes I am a bit concerned about that noise. It does not sound right when a drive clicks, even if it is when powering down. i have used shutdown yesterday, and wait a minute or so before powering down the laptop using its power button, after shutdown and did not hear that noise. Will be using shutdown. I am also thinking of writing a script to get the drive to stop/sleep with a script as Mark (MJ) pointed out in another reply. As this is my drive that has the OS in it, for now, until i solve the issue with the hdd caddy i have. > > HTH, > > Jason M. > Kind Regards, Riza
