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this post was submitted on 07 Jun 2025
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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@over_clox You can adjust this with hdparm:
hdparm -B 254 /dev/sda (or whatever the drive name)
Will prevent spin down altogether.
hdparm -B 1-127 /dev/sda
Will allow spin down with '1' being the most aggressive power management and 127 the
least.
I put these in /etc/rc.local so that it gets run by systemd at boot-up.
Ah, thank you very much in advance! It's a bit late here and I'm soon to head to bed, but I have used hdparm before, thanks for the reminder!
I'm saving your comment and will look into it more tomorrow, or soon at least. Thanks! 👍
@over_clox You are most welcome. This is one aspect I love about Linux, damned near everything is adjustable. Those adjustments aren't necessarily well organized, but they are usually there, somewhere...
Well shit, I figured out what the real issue was.
I'm on a laptop with only 3 USB ports, and I'm running a physical laptop hard drive on an adapter on one USB port, and a laptop CD/DVD drive on another adapter on another port.
Obviously that's probably pushing the power limits of the USB power, but it's worked before, so I didn't see why it wasn't quite working right now.
But this time I was trying a different DVD drive, an HP TS-T633P slot loader drive. Apparently that drive is extra power hungry compared to a conventional laptop drive, so I dug out my old tray loader drive.
Apparently the slot loader drive was competing with the hard drive for power, and they were apparently taking turns robbing power from each other. The system is perfectly happy with the tray loader drive though, no reconfiguration necessary!
🤦♂️😂🤣👍