Unit3 - Subjective Questions

Step 1: Create a Bootable USB Drive

• Download the official Media Creation Tool from Microsoft.
• Insert a USB flash drive (at least 8GB capacity) and use the tool to create the installation media.

Step 2: Configure BIOS/UEFI Settings

• Restart the computer and enter the BIOS/UEFI utility (commonly by pressing F2, F12, DEL, or ESC during boot).
• Navigate to the 'Boot' tab and change the Boot Priority Order so that the USB drive is at the top.
• Save changes and exit.

Step 3: Begin Installation

• The system will boot from the USB. Select your language, time and currency format, and keyboard method, then click Next.
• Click on Install Now.

Step 4: Product Key and Edition Selection

• Enter your Windows product key. (If you don't have it, select "I don't have a product key" to activate later).
• Choose the correct edition of Windows (e.g., Home or Pro) that matches your license.

Step 5: Accept License and Choose Installation Type

• Accept the Microsoft software license terms.
• Choose Custom: Install Windows only (advanced) for a clean installation.

Step 6: Disk Partitioning

• Select the unallocated space on your hard drive to install Windows, or delete existing partitions to create fresh unallocated space.
• Click Next. Windows will copy files, install features, and restart several times.

Step 7: Out-of-Box Experience (OOBE)

• Follow the on-screen prompts to connect to a network, set up a user account, create a PIN/password, and configure privacy settings.

Before installing a modern Windows OS (like Windows 11), the system must meet specific minimum hardware requirements to ensure smooth functionality. These include:

• Processor (CPU): 1 gigahertz (GHz) or faster with 2 or more cores on a compatible 64-bit processor or System on a Chip (SoC).
• Memory (RAM): A minimum of 4 GB of RAM.
• Storage: At least 64 GB of available storage space. Additional space may be required to download updates and enable specific features.
• System Firmware: UEFI (Unified Extensible Firmware Interface) and Secure Boot capable.
• TPM: Trusted Platform Module (TPM) version 2.0 is mandatory for security features.
• Graphics Card: Compatible with DirectX 12 or later with a WDDM 2.0 driver.
• Display: High definition (720p) display that is greater than 9 inches diagonally, with 8 bits per color channel.
• Internet Connection: Required to perform updates, download features, and authenticate Microsoft accounts during the initial Out-of-Box Experience (OOBE).

Concept of Dual Booting:
Dual booting refers to a computer configuration where two different Operating Systems (e.g., Windows and Linux, or two different versions of Windows) are installed on the same hard drive or different drives within the same system. A boot manager (like GRUB or Windows Boot Manager) allows the user to choose which OS to load when the computer is turned on.

Advantages:

• Software Compatibility: Allows users to run software native to specific operating systems without using virtualization (e.g., playing Windows-exclusive games while using Linux for software development).
• Maximum Hardware Performance: Unlike virtual machines which share resources, dual booting gives the active OS full access to the CPU, RAM, and GPU.
• Testing and Redundancy: Provides a fallback OS if one crashes or becomes corrupted.

Drawbacks/Disadvantages:

• Storage Space: Both operating systems require their own partition and dedicate disk space for their respective system files and applications.
• Inconvenience: Switching between the operating systems requires a complete system reboot.
• Complexity: Setup can be complex, and improper configuration or an OS update (like a major Windows update) might overwrite the bootloader, making one OS inaccessible.

Setting up a dual boot between Windows and Linux involves preparing the disk, installing Linux alongside Windows, and configuring the bootloader.

Step 1: Backup and Prepare Windows

• Backup all important data to an external drive.
• Boot into Windows, open Disk Management, right-click the main partition (usually C:), and select Shrink Volume. Free up at least 20-30 GB of unallocated space for Linux.

Step 2: Create a Bootable Linux USB

• Download the Linux ISO (e.g., Ubuntu) and use a tool like Rufus or BalenaEtcher to create a bootable USB drive.

Step 3: Modify BIOS/UEFI Settings

• Restart the computer, enter BIOS/UEFI, and disable Secure Boot (optional but recommended for some Linux distributions) and Fast Boot.
• Change the boot priority to boot from the USB drive.

Step 4: Install Linux

• Boot from the USB and select "Install Ubuntu".
• Follow the prompts for language and keyboard. When asked for the Installation Type, choose "Install Ubuntu alongside Windows Boot Manager" (this is the easiest automated method). Alternatively, use the "Something else" option to manually create Root (/), Home (/home), and Swap partitions in the unallocated space.
• Complete the user setup and allow the installation to finish.

Step 5: Configure GRUB Bootloader

• Restart the system. Instead of booting directly into Windows, the GRUB boot menu will appear, displaying both Ubuntu and Windows options.
• Use the arrow keys to select the desired OS to boot into.

Disk Management is a built-in system utility in Windows that enables users to view and manage the disk drives installed in their computer and the partitions associated with those drives. It provides a graphical interface to perform advanced storage tasks.

Primary Functions of Disk Management:

• Initializing Disks: When a new hard drive or SSD is connected, Disk Management is used to initialize the disk so Windows can recognize it.
• Creating Partitions/Volumes: Allows users to create new drives (volumes) from unallocated space.
• Formatting: Formatting partitions with specific file systems like NTFS, FAT32, or exFAT so they can store data.
• Assigning Drive Letters: Users can change or assign letters (e.g., D:, E:) to specific partitions or removable drives.
• Shrinking and Extending Volumes: Allows dynamically adjusting the size of existing partitions without losing data (provided there is contiguous unallocated space).
• Changing Partition Styles: Converting disks between Master Boot Record (MBR) and GUID Partition Table (GPT) styles (usually requires the disk to be empty).

MBR and GPT are two distinct layouts for storing partitioning information on a physical disk.

1. MBR (Master Boot Record):

• Age & Compatibility: An older standard introduced in 1983, compatible with legacy BIOS systems.
• Partition Limitations: It supports a maximum of 4 primary partitions. To create more, one primary partition must be made into an "extended partition" holding logical drives.
• Capacity Limit: MBR uses 32-bit addresses for sectors. Assuming a standard sector size of 512 bytes, the maximum addressable space is calculated as:
  
• Redundancy: Partition and boot data are stored in a single location, making it vulnerable to data corruption.

2. GPT (GUID Partition Table):

• Age & Compatibility: A modern standard associated with UEFI (Unified Extensible Firmware Interface).
• Partition Limitations: Supports up to 128 primary partitions natively in Windows, eliminating the need for extended partitions.
• Capacity Limit: GPT uses 64-bit addresses, allowing for massive disk sizes. Mathematically:
  
• Redundancy: Stores multiple copies of partition data across the disk (a primary header at the start and a backup at the end) with Cyclic Redundancy Checks (CRC) for error detection.

Conclusion: GPT is superior in capacity, partition count, and data security, and is strictly required for disks larger than 2 TB.

On a traditional MBR (Master Boot Record) disk, space is divided into different types of partitions due to the architectural limit of 4 partition table entries.

1. Primary Partition:

• A primary partition contains a file system and can be used to boot an operating system.
• An MBR disk can have a maximum of 4 primary partitions.
• Only one primary partition can be designated as the "Active" partition at any given time, which is where the BIOS looks for the OS bootloader.

2. Extended Partition:

• If a user needs more than 4 partitions on an MBR disk, they must configure up to 3 primary partitions and 1 extended partition.
• An extended partition cannot hold data or an OS directly. It acts merely as a "container" or "wrapper" for further sub-divisions.
• A single disk can only have one extended partition.

3. Logical Partition (or Logical Drive):

• These are the sub-divisions created inside the extended partition.
• They function like primary partitions in terms of storing data and receiving drive letters (e.g., D:, E:).
• They cannot usually be used to boot an operating system.
• You can create multiple logical partitions within the single extended partition container, bypassing the 4-partition limit of MBR.

To create a new partition (volume) from unallocated space in Windows, follow these steps:

• Step 1: Open Disk Management
  Right-click the Start button and select Disk Management (or press Win + R, type diskmgmt.msc, and press Enter).
• Step 2: Locate Unallocated Space
  Find the disk containing "Unallocated" space (usually represented by a black bar over the space). If there is no unallocated space, right-click an existing volume, select Shrink Volume, and specify the amount of space to free up.
• Step 3: Launch the Wizard
  Right-click the Unallocated space and select New Simple Volume.
• Step 4: Specify Volume Size
  The "New Simple Volume Wizard" will open. Click Next, and specify the size of the new partition in Megabytes (MB). By default, it will use all available unallocated space.
• Step 5: Assign a Drive Letter
  Choose an available drive letter from the drop-down menu (e.g., E:) and click Next.
• Step 6: Format the Partition
  Choose a file system (usually NTFS for Windows). Enter a Volume Label (a name for the drive, like "Data"). Check the box for "Perform a quick format" and click Next.
• Step 7: Finish
  Review the settings and click Finish. Windows will format the space, and the new drive will immediately appear in File Explorer.

Installing a USB printer varies slightly depending on whether the host is running Windows or Linux.

1. Installation on Windows:

• Plug and Play: Modern Windows OS (10/11) has excellent Plug and Play (PnP) support. Simply connect the printer via USB and power it on. Windows will detect the device, search its local driver store or Windows Update, and automatically install it.
• Manual Installation: If automatic installation fails:
  1. Go to Settings > Bluetooth & devices > Printers & scanners.
  2. Click Add a device.
  3. If not found automatically, click The printer that I want isn't listed.
  4. Choose "Add a local printer or network printer with manual settings".
  5. Select the USB port, choose the manufacturer and model from the list, or click Have Disk to install drivers downloaded from the manufacturer's website.

2. Installation on Linux (e.g., Ubuntu):

• CUPS System: Linux manages printers using CUPS (Common UNIX Printing System).
• Automatic Setup: Like Windows, modern Linux distros automatically detect USB printers. Upon plugging it in, a notification usually appears stating the printer is configured.
• Manual Installation (GUI):
  1. Open Settings > Printers.
  2. Click Add a Printer.
  3. The system scans for connected devices. Select the USB printer from the list.
  4. The system searches the database for a PPD (PostScript Printer Description) file or driver. If found, it installs it automatically.
  5. If not found, the user can manually provide a .ppd file provided by the manufacturer.
• Manual Installation (Terminal): Administrators can manage printers using the web interface at http://localhost:631 or via command-line tools like lpadmin.

Definition: A printer driver is a specialized piece of software that acts as a translator between the operating system (and applications) and the physical printer hardware.

Importance:

• Operating systems process documents in generic formats. Printers, however, require specific commands (like PCL or PostScript) to know where to place ink, manage paper trays, and set resolutions.
• The driver translates the generic OS commands into the exact machine language the specific printer model understands.
• Without a driver, the OS cannot communicate with the hardware, rendering the printer useless.

How to Update a Printer Driver in Windows:

1. Via Windows Update: Go to Settings > Windows Update > Advanced Options > Optional Updates. Look for printer driver updates and install them.
2. Via Device Manager:
   • Right-click the Start button and open Device Manager.
   • Expand the Printers or Print queues section.
   • Right-click the specific printer and select Update driver.
   • Choose Search automatically for drivers.
3. Manufacturer Website (Recommended):
   • Go to the official website of the printer manufacturer (e.g., HP, Canon, Epson).
   • Navigate to Support/Downloads, enter the exact printer model.
   • Download the latest driver package for the specific Windows version and run the installer executable.

Installing an internal CD/DVD drive involves physical hardware mounting and connecting appropriate cables.

Step 1: Preparation

• Turn off the computer, unplug the power cable from the wall, and press the power button to discharge residual electricity.
• Open the side panel of the desktop cabinet.
• Remove a blank 5.25-inch drive bay cover from the front panel of the cabinet.

Step 2: Mounting the Drive

• Slide the CD/DVD drive into the open 5.25-inch bay from the front of the case.
• Align the screw holes on the side of the drive with the holes in the drive cage.
• Secure the drive using four screws (two on each side) or use the tool-less mounting mechanism if the case supports it.

Step 3: Connecting Cables

• SATA Power Cable: Locate an available 15-pin SATA power connector coming from the Power Supply Unit (PSU) and plug it into the wider port on the back of the CD/DVD drive.
• SATA Data Cable: Take a SATA data cable (usually red or black) and plug one end into the smaller 7-pin port on the drive. Plug the other end into an available SATA port on the motherboard.

Step 4: Finalizing

• Close the computer case, plug in the power cable, and turn on the computer.
• The BIOS/UEFI and Operating System will automatically detect the new drive via Plug and Play.

Hardware Installation:

1. Safety First: Turn off the computer, unplug it, and ground yourself to prevent Electrostatic Discharge (ESD).
2. Open Case: Remove the side panel of the computer case.
3. Locate Slot: Find an available PCIe slot (usually PCIe x1, the smallest slot) on the motherboard.
4. Remove Bracket: Remove the metal expansion slot cover on the back of the case corresponding to the chosen PCIe slot.
5. Insert Card: Carefully align the sound card with the PCIe slot and press down firmly until it clicks into place. Ensure the audio ports face outward through the back of the case.
6. Secure Card: Fasten the card to the case using a screw at the expansion bracket.
7. Connect Audio Header (Optional): If you want the front-panel audio jacks of the case to work through the new card, unplug the HD Audio cable from the motherboard and plug it into the designated header on the sound card.
8. Close Case: Reattach the side panel and power on the computer.

Software Installation:

1. Windows usually detects the new hardware and installs generic audio drivers.
2. To get the full features (like equalizers or surround sound management), disable the onboard motherboard audio in the BIOS/UEFI.
3. Download the specific driver package from the sound card manufacturer's website (e.g., Creative, ASUS) and install it.
4. Restart the computer and set the new sound card as the default playback device in Windows Sound settings.

Connecting the Hardware:

• Analog (3.5mm Jack): Desktop computers typically have color-coded audio ports on the back (motherboard) or front panel. The Green port is the 'Line Out' used for standard stereo speakers or headphones. Plug the 3.5mm jack into the green port.
• USB: For USB speakers or headsets, simply plug the device into any available USB port. The device contains its own Digital-to-Analog Converter (DAC).
• Bluetooth: Turn on the Bluetooth headphones/speakers and put them in pairing mode. In Windows, go to Settings > Bluetooth & devices > Add device > Bluetooth, and select the device to pair it.

Configuring in Windows:

1. Select Playback Device: Click the speaker icon in the system tray (bottom right corner of the taskbar) and click the arrow to select your desired output device (e.g., 'Realtek High Definition Audio' or the specific name of your USB/Bluetooth device).
2. Adjust Volume: Use the slider in the system tray to test audio levels.
3. Advanced Settings: Go to Settings > System > Sound. Here, you can click on the specific output device to adjust spatial audio, check format properties (e.g., 24-bit, 48000 Hz), or run an audio test to ensure left and right channels are working correctly.

Standard Procedure for Installing Application Software:

1. Acquire the Software: Download the software installer from a verified source, or insert physical installation media (CD/DVD/USB).
2. Locate Installer: Navigate to the folder where the file was downloaded (usually the 'Downloads' folder).
3. Run as Administrator: Right-click the installation file and select "Run as administrator". This provides the installer with the necessary permissions to write files to the system drive and modify the registry.
4. UAC Prompt: Accept the User Account Control (UAC) prompt asking if you want to allow the app to make changes to your device.
5. Installation Wizard: The installer wizard will launch.
   • License Agreement: Read and accept the End User License Agreement (EULA).
   • Installation Path: Choose the destination folder (default is usually C:\Program Files or C:\Program Files (x86)).
   • Custom Options: Select components to install, and choose whether to create desktop shortcuts or start menu entries.
   • Bloatware Check: Carefully uncheck any boxes offering to install unrelated third-party software (like browser toolbars).
6. Execution: Click Install. The wizard will extract files, copy them to the destination, and register the software.
7. Finish: Click Finish. The software may prompt for a system reboot to finalize registry changes.

Common Installer File Types in Windows:

• .exe (Executable): The most common installer format, containing the program code and installation scripts.
• .msi (Microsoft Installer): A Windows installer package database used primarily for automated or enterprise software deployments.

Downloading software from the internet exposes a computer system to potential malware, spyware, and viruses. To ensure system integrity, users should follow these best practices:

• Use Official Sources: Always download software directly from the developer's official website or official app stores (like Microsoft Store). Avoid third-party software aggregators that often bundle adware with installers.
• Verify the URL: Check the web address to ensure it starts with https:// (secure) and check for typographical errors in the domain name (e.g., downloading from v1c.com instead of vlc.com is a phishing/malware trap).
• Check Digital Signatures: Before running an .exe file, right-click it, go to Properties, and check the 'Digital Signatures' tab to verify that it is signed by the legitimate software publisher.
• Use Antivirus Software: Ensure an updated Antivirus program (like Windows Defender) is running. Scan the downloaded file manually before execution.
• Avoid Pirated Software: Do not download 'cracked' software, keygens, or use peer-to-peer torrents for commercial software, as these are the most common vectors for Trojan horse malware and ransomware.
• Read During Installation: Do not blindly click "Next". Use "Custom" or "Advanced" installation modes to uncheck boxes that install potentially unwanted programs (PUPs) bundled with the main software.
• Check File Checksums: For high-security environments, verify the MD5 or SHA-256 hash provided on the developer's website matches the hash of the downloaded file to ensure it hasn't been tampered with.

Software is generally categorized into two main types based on its function: System Software and Application Software.

1. System Software:

• Definition: System software is designed to manage and control the computer hardware and to provide a platform for running application software.
• Function: It acts as an interface between the user, application software, and computer hardware. It manages memory, processes, and peripherals.
• Execution: It generally runs in the background and is essential for the computer to function.
• Independence: System software can run independently of application software.
• Examples:
  • Operating Systems (Windows 11, Linux Ubuntu, macOS)
  • Device Drivers (Printer drivers, GPU drivers)
  • Utility Programs (Disk defragmenter, Antivirus)

2. Application Software:

• Definition: Application software is designed to perform specific tasks for the end-user.
• Function: It is created to solve specific problems or provide entertainment (e.g., word processing, browsing, gaming).
• Execution: It runs in the foreground and requires user interaction to perform tasks.
• Independence: It is entirely dependent on the System Software to run.
• Examples:
  • Word Processors (Microsoft Word, Google Docs)
  • Web Browsers (Google Chrome, Mozilla Firefox)
  • Media Players (VLC Media Player)
  • Games.

Significance of File Systems:
A file system is a method and data structure that an operating system uses to control how data is stored and retrieved on a disk. Without a file system, information placed on a storage medium would be one large body of data with no way to tell where one piece of information stops and the next begins. The file system divides the disk into logical sectors and tracks file names, permissions, and locations.

Comparison of Common Windows File Systems:

1. FAT32 (File Allocation Table 32):

• Age & Compatibility: Very old, extremely high compatibility across Windows, Mac, Linux, and consumer devices (TVs, car audios, consoles).
• File Size Limit: A single file cannot exceed 4 GB.
• Partition Limit: Max partition size is technically 2 TB (though Windows natively only allows formatting up to 32 GB as FAT32).
• Use Case: Best for small USB flash drives used across different types of devices.

2. NTFS (New Technology File System):

• Age & Compatibility: The modern standard for Windows. Read-only natively on macOS.
• File Size Limit: Effectively limitless (up to 16 Exabytes).
• Features: Supports advanced features like file security/permissions, encryption, compression, and journaling (which prevents data loss during power failures).
• Use Case: Mandatory for internal Windows system drives and ideal for large external hard drives used exclusively with Windows.

3. exFAT (Extensible File Allocation Table):

• Age & Compatibility: Newer than FAT32, designed as a lightweight file system like FAT32 but without its limits. Read/Write compatible with both Windows and macOS.
• File Size Limit: Effectively limitless.
• Use Case: The best choice for large external USB drives and SD cards that need to transfer files larger than 4 GB between Mac and Windows computers seamlessly.

Concept of Disk Formatting:
Disk formatting is the process of preparing a data storage device (like a hard drive or SSD) for initial use. It involves setting up an empty file system, creating a root directory, and marking bad sectors. During this process, metadata and file system structures (like the Master File Table in NTFS) are created, which inherently consume some of the disk's physical space.

Derivation of Usable Space:
Let the true binary capacity of the drive after accounting for decimal-to-binary conversion be .
If the file system requires of this space for formatting and metadata, the space lost is .
Therefore, the usable space is:

Why a 1 TB drive shows less capacity in Windows:
There are two main reasons for this discrepancy:

1. Decimal vs. Binary Prefix: Storage manufacturers advertise space using the decimal system (Base 10), where . Therefore, .
   However, Windows calculates space using the binary system (Base 2), where .
   To find the binary capacity ():
   
2. Formatting Overhead: From this , the file system (NTFS) further consumes a small percentage for the Master File Table and journaling, meaning the actual usable space will be slightly less than 931 GiB.

Therefore, due to binary calculation and formatting overhead, a "1 TB" drive will only display around 931 GB of usable space in the Windows operating system.

Installing a wireless printer allows multiple computers on the same network to print without needing direct USB connections.

Step 1: Connect the Printer to the Wi-Fi Network

• Power on the printer.
• Navigate to the printer's built-in display panel, go to the Wireless or Network settings.
• Select the Wi-Fi Setup Wizard, choose your local Wi-Fi network (SSID), and enter the Wi-Fi password. (Alternatively, use the WPS button on the router and printer if supported).
• Once connected, the printer will be assigned an IP address by the router.

Step 2: Add the Printer to Windows

• Ensure the Windows computer is connected to the same Wi-Fi network as the printer.
• Go to Settings > Bluetooth & devices > Printers & scanners.
• Click on Add device (or Add a printer or scanner).
• Windows will scan the local network for available printers.
• Once the wireless printer's name appears in the list, click Add device next to it.
• Windows will automatically communicate with the printer over the network, download the necessary drivers, and configure the print queue.

Step 3: Troubleshooting (If not found)

• If Windows does not find the printer, click "The printer that I want isn't listed".
• Select "Add a printer using an IP address or hostname".
• Enter the IP address of the printer (which can be printed from the printer's network configuration page) and let Windows query and install the driver directly via IP.

Concept of Plug and Play (PnP):
Plug and Play (PnP) is a set of specifications developed by Microsoft and Intel that allows a computer system to automatically detect and configure hardware devices as soon as they are connected, without requiring manual configuration by the user.

How PnP Simplifies Peripheral Installation:
Before PnP, installing a peripheral (like a sound card or printer) required manual configuration of IRQs (Interrupt Requests), DMA (Direct Memory Access) channels, and memory addresses using physical jumpers on the motherboard, followed by manually installing drivers from floppy disks.

PnP simplifies this through the following process:

1. Detection: When a device (e.g., a USB webcam) is plugged in, the PnP-compliant bus (like USB or PCIe) detects a change in electrical state and alerts the Operating System.
2. Identification: The OS queries the device to request its hardware ID. The device responds with a unique identifier specifying its manufacturer and model.
3. Resource Allocation: The OS dynamically allocates system resources (IRQs, memory addresses) to the device so it does not conflict with existing hardware.
4. Driver Installation: The OS searches its internal driver store or the internet (e.g., Windows Update) for a driver matching the hardware ID. If found, it installs the driver automatically.
5. Initialization: The device is powered up, the driver is loaded into memory, and the user is notified (e.g., "Device is ready to use"), completely automating the installation cycle.