Question

What are the steps required to write a block of data from a disk to memory?

1) Read the data from the disk into a buffer in memory
2) Allocate memory space for the data
3) Transfer the data from the buffer to the allocated memory space
4) Update the disk's file system to reflect the changes
5) None of the above

Answer 1

The steps required to write a block of data from a disk to memory include reading the data into a buffer in memory, allocating memory space, transferring the data, and updating the disk's file system.

Step-by-step explanation:

The steps required to write a block of data from a disk to memory are as follows:

1. Read the data from the disk into a buffer in memory: This involves retrieving the data from the disk and temporarily storing it in a buffer area in memory.
2. Allocate memory space for the data: In this step, the necessary memory space is reserved to store the data permanently.
3. Transfer the data from the buffer to the allocated memory space: The data from the buffer is moved to the allocated memory space for permanent storage.
4. Update the disk's file system to reflect the changes: The disk's file system is updated to reflect the newly written data, ensuring it can be accessed in the future.