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Advanced installation and troubleshooting

Advanced installation and troubleshooting. Unit objectives Configure SCSI devices, understand fault-tolerant disk systems and describe the different RAID levels Identify default IRQs, I/O addresses, and DMAs, and explain Plug-and-Play

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Advanced installation and troubleshooting

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  1. Advanced installation and troubleshooting Unit objectives • Configure SCSI devices, understand fault-tolerant disk systems and describe the different RAID levels • Identify default IRQs, I/O addresses, and DMAs, and explain Plug-and-Play • Describe various installation methods and how to create a kickstart file • Troubleshoot the installation process

  2. Topic A • Topic A: Advanced hardware configuration • Topic B: Fault-tolerant disk systems • Topic C: Advanced installation methods • Topic D: Troubleshooting installations

  3. SCSI hard disk configuration

  4. Activity A-1 Discussing SCSI

  5. Mainboard flow control • The processor executes processes in physical memory for devices • Its time and capacity must be shared • Sharing happens in one of two ways • Polling • Interruption • Interrupt Requests (IRQs) • Used by the processor to prioritize simultaneous requests for service from peripheral devices

  6. IRQ priorities

  7. Default IRQ assignments

  8. Default I/O assignments continued

  9. Default I/O assignments, continued

  10. Default DMA assignments

  11. Plug-and-Play • Plug-and-Play (PnP) • Automatically assigns IRQ, I/O address, and DMA settings

  12. Exercise A-2 Discussing resources andPlug-and-Play

  13. Power management • Advanced Power Management (APM) • Older standard • Shuts off laptop peripherals • Supported by BIOS • Advanced Configuration and Power Interface (ACPI) • Replaces APM • Configured within OS • Monitors CPU temp and battery level • Supports standby and sleep

  14. Activity A-3 Discussing power management

  15. Topic B • Topic A: Advanced hardware configuration • Topic B: Fault-tolerant disk systems • Topic C: Advanced installation methods • Topic D: Troubleshooting installations

  16. RAID Configuration • Redundant Array of Inexpensive Disks (RAID) • Can be implemented with software • More often hardware-based

  17. RAID levels • 0 Not fault-tolerant • 1 Disk mirroring • 2 Variant of level 0, no longer used • 3 Disk striping with parity bit • 4 Variant of level 3, faster • 5 Most common, minimum three disks • 6 Variant of level 5, adds more parity bits

  18. Activity B-1 Discussing RAID levels

  19. Topic C • Topic A: Advanced hardware configuration • Topic B: Fault-tolerant disk systems • Topic C: Advanced installation methods • Topic D: Troubleshooting installations

  20. Advanced installation methods • Two styles of installation program • Graphical • Text • Graphical installation • GUI interface • Mouse support • Help window is part of the installation screens • Best for CD-ROM or hard drive installations on standard modern hardware • Text-based installation • Text-based format rather than a GUI-based interface • No mouse support • Faster

  21. Hard disk installation • Copy install files to partition • Boot with startup CD or USB drive • Start installation program • Choose Hard drive option • Point to location of the files

  22. Selecting the installation files

  23. Activity C-1 Discussing installation methods

  24. Network installation protocols • Network File System (NFS) • File Transfer Protocol (FTP) • Hypertext Transfer Protocol (HTTP)

  25. Configuring TCP/IP

  26. Activity C-2 Discussing Network installation methods

  27. Automating installations • Disk imaging • Fast • Requires hardware to be identical • Programs installed will be identical • Kickstart file • Contains installation choices • Makes settings that are otherwise entered manually • Created with the Kickstart Configurator

  28. The Kickstart Configurator

  29. Activity C-3 Creating a kickstart file

  30. Topic D • Topic A: Advanced hardware configuration • Topic B: Fault-tolerant disk systems • Topic C: Advanced installation methods • Topic D: Troubleshooting installations

  31. Problems starting the installation • Boot order • Floppy • CD-ROM • hard disk • BIOSs on different computers may be radically different • Consult the user’s manual to ensure that you are changing the correct setting

  32. Problems during installation • Graphical installation • Video card not detected or supported • Mouse not detected • Any installation • Improper device configuration • Bad RAM • Improper voltages • Boot loader not installed properly

  33. Problems after installation • Installation program did not detect the hardware properly • Programs failed to be installed • Installation log file • Records actions that occurred or failed during the installation process • proc directory • Displays configuration used by the kernel

  34. Files found in /proc directory continued

  35. Files found in /proc directory, continued

  36. Log files • dmesg • Displays hardware detected at last boot • boot.log • Displays boot information • messages • Displays boot and other information

  37. Activity D-1 Viewing system information

  38. Chapter summary • Configured SCSI devices, identified default IRQs, I/O addresses, and DMAs, and explained Plug-and-Play • Explored fault-tolerant disk systems • Examined installation using a text interface and source files on hard disk or network servers • Learned how to troubleshoot the installation process

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