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README.md: Add instructions for relaxing memory permissions 

As this utility requires access to /dev/mem, the default protections of
Linux and OpenBSD must be relaxed to allow this. Make a note of this in
the instructions.
btrfsvols
Nicholas Chin 2023-12-17 18:02:29 -07:00
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util/dell-flash-unlock/README.md
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@ -8,6 +8,8 @@ E6400, which mainly seem to be the Latitude and Precision lines starting from
around 2008 (E6400 era).
## TL;DR
On Linux, ensure you are booting with the `iomem=relaxed` kernel parameter.
On OpenBSD, ensure you are booting with securelevel set to -1.
Run `make` to compile the utility, and then run `sudo ./dell_flash_unlock` and
follow the directions it outputs.