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There are options to adjust the the overscan settings in /boot/config.txt.

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border

Is there any way for me to "test" the overscan_* settings instead of manually editing the config file, restarting the system, checking if the settings need adjusting more, then restarting until all the settings fit nicely with my monitor?

share|improve this question
I'm hoping there is some sort of application that has screens such as "Press the left or right arrows until the entire box is inside of the screen". – IQAndreas Sep 3 '14 at 19:42
Check this article Overscan settings in Raspberry Pi – user3817842 Sep 4 '14 at 18:31

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