To force a MacBook to sleep when closing its lid and while an external monitor is connected:
Manually disconnect the Magsafe or power cable, then close the lid. Wait for the computer to go to sleep and then reconnect the powercable.
Follow this instructions to put a bootable macOS installer on a memory stick:
1. Download the full size macOS installer
Download macOS from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6
Sometimes image sensors on digital cameras develop stuck or dead pixels. Sometimes showing as a bright pink pixel on the jpg image. Canon cameras and probably other brands too have a function to self repair.
- Put a fully charged battery in the camera.
- From the Menu (Under Advanced Functions) initiate a "Manual Sensor Cleaning".
- Wait for about half a minute, then turn off the camera.
This worked on my Canon 50D
There are two applications to put a hard drive to idle in Openwrt:
- HDD Idle (hd-idle): This option did not work for me.
- HD Parm (hdparm): This option worked perfectly, here is the command to use:
The previous command stops the disk from spinning after 2 minutes.
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