Questions: What happens after the POST? After POST, BIOS copies the operating system from the hard drive to RAM.

What happens after the POST? After POST, BIOS copies the operating system from the hard drive to RAM.
Transcript text: What happens after the POST? After POST, BIOS copies the operating system from the hard drive to RAM.
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Solution

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The answer is the second one: After POST, BIOS copies the operating system from the hard drive to RAM.

Explanation for each option:

  1. After POST, BIOS copies the operating system from ROM to the hard drive.

    • This is incorrect. The operating system is not stored in ROM, and the BIOS does not copy it to the hard drive. The operating system is typically stored on the hard drive.

  2. After POST, BIOS copies the operating system from the hard drive to RAM.

    • This is correct. After the Power-On Self Test (POST) is completed, the BIOS loads the bootloader from the hard drive into RAM, which then loads the operating system into RAM.

  3. After POST, BIOS copies the operating system from the hard drive to the ROM.

    • This is incorrect. The operating system is not copied to ROM. ROM is read-only memory and is used to store firmware, not the operating system.

  4. After POST, BIOS performs the authentication process.

    • This is incorrect. While some systems may have security features that involve authentication, the primary function of the BIOS after POST is to load the operating system from the hard drive into RAM.

Summary: After the POST process, the BIOS copies the operating system from the hard drive to RAM, enabling the system to boot up and become operational.

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