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If the build process does not restore your machine correctly, go back to "How to boot from USB" and proceed from step 4 with the alternative instructions below.
Press Enter once the UEFI option is chosen, then ensure Format disks and lose /data is highlighted. This option will reset all disks and rebuild your whole system, and will require you to manually set the hostname once building is complete.
The rebuild process will now blank all of the system’s disks and then reboot. Proceed with the installation as described from step 4 selecting “Customer factory reset”.
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If the screen in step 5 in "How to boot from USB" does not appear, and instead you see a black screen with white text, reboot the GridION (hold the power button for a few seconds) then proceed from step 3.
During the process to blank all of the system’s disks, the following screen will be visible showing either ASRock or ASUS with a scrolling circle. This process may take time to complete and be following by a reboot.
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If you chose one of the standard reset options (i.e. anything except secure wipe) and the GridION crashes or produces an error during the reset process, perform a "secure wipe".
The final "secure wipe" option will lose data and wipe the hard drives completely to a known state. If your GridION is unable to boot up even after "secure wipe" and a subsequent customer factory reset, contact Support (support@nanoporetech.com) as this may indicate a hardware failure.