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How do you keep information you need after shutting down the computer
When the bootloader loads the kernel, i'm trying to optimize the initialization and cache things that were already loaded.

Thanks.

You could use SQLite3 and SQLite3 Amalgamation for really persistent data.

You could also use a set of cache and configuration files with journaling in a tree with some logic, to keep device detection and configuration information, as well as user preferences and configuration changes to apply at boot time. Also files to resume the whole system.