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Caffeine is a great tool that you can control from the KDE system tray. You can manually use it to turn power-saving on or off. An even better function is to list processes that will trigger suspension of power-saving. However, I think that it can only suppress screensavers and suspending together. Caveat: I haven't used caffeine recently, since it doesn't ...


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dd's direct flag ought to bypass the (host) cache, and force I/O to be sent to the drive: dd if=/dev/sda bs=4096 count=1 of=/dev/null iflag=direct ^^^^^^^^^^^^ Testing on my machine, this definitely makes the disk activity light blink. It doesn't blink (at least the second time) without the iflag.


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To disable partition to be mounted at startup you need to edit /etc/fstab. To have your HDD not automounted when you boot, add one line for each partition, such as: /dev/sdb5 / auto noauto 0 0 UPDATE: sudo hdparm -y /dev/sdb -y Force an IDE drive to immediately enter the low power consumpā€ tion standby mode, usually causing it to spin ...



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