Package beep activates PC Speaker on hardware supporting it.

Package block contains functions dealing with linux block devices and the underlying hardware.

Package cfa implements communication with Crystalfontz LCDs such as CFA-631 and CFA-635, without use of CGO.

Package console allows for some trivial manipulations of linux virtual terminals, such as switching which one is in the foreground, displaying messages, then switching back.

Package cpu allows determining topological arrangement of CPU cores, generallyfor use in setting RSS IRQs.

Package dmi reads DMI (aka SMBIOS) data via dmidecode.

Package ioctl uses IOCTL's to find block device size, adjust networkinterface state, etc.

Package ipmi interacts with the platform BMC.

Package kmsg facilitates processes writing to the kernel ring buffer.

Package nic allows enabling/disabling NICs, configuring XPS, RFS, and RSS, etc.

Package power handles poweroff- and reboot-related functionality, includingrunning pre-reboot (Preboot) functions registered with the housekeeping pkg.

Package udev allows starting udev and finding udevd if running.

Package uefi manipulates UEFI boot entries and other variables.