Exercises

  1. Boot your PC and enter the BIOS configuration utility. Determine how to change the boot order and how to enable and disable peripherals built into the motherboard.

  2. Examine the enabled serial and parallel ports. Can you manually configure the interrupts and I/O ports assigned to them?

  3. Examine your modem and sound external interfaces on your PC. Are the devices built into your motherboard or independent expansion cards?

  4. If you have a SCSI controller, reboot your PC and enter the SCSI BIOS. What device number is selected, if any, for boot? How are the controller’s onboard terminators configured? What data rate is the controller configured for?

  5. If you have a RAID controller, reboot your PC and enter the RAID BIOS. What options do you have to configure RAID on your system?

  6. Examine the kernel’s interrupt assignments by executing cat /proc/interrupts. Are your devices reported correctly? Are any devices sharing interrupts?

  7. Review output from cat /proc/dma and cat /proc/ioports.

  8. Create a list of all installed PCI devices using lspci. Note the devices built into your motherboard.

  9. Run lsmod and match the loaded kernel modules with hardware in your system.

  10. Connect a USB device (mouse, printer, etc.) to your system. Run lsmod to verify that the appropriate driver loaded.

  11. Run the dmesg command and go through the hardware your kernel recognized at boot time.

  12. Reboot the system and modify the grub boot line to boot into single-user mode.

  13. At the root prompt, type kill 1. What happens? Why?

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