Test Your Bootloader

 Posted on May 7, 2024  |  

Testing Your Bootloader in a Virtual Machine In the previous article, we wrote a simple bootloader and saved it to a file named boot.bin. Now, we want to test this bootloader in a virtual machine to ensure it functions as expected. Here’s how we can achieve this: Creating a Floppy Image: Format a floppy disk: Open a terminal and run the command sudo fdisk /dev/floppy0. This will format the floppy disk. [Read More]

Bootload Your Message

 Posted on May 7, 2024  |  

Bootload Your Message: A Minimal x86 Experiment The power of a boot loader is undeniable. It’s the first code your computer executes, setting the stage for everything that follows. But what if you could write your own boot loader, displaying a custom message as the first thing your computer sees? In this article, we’ll explore how to create a minimal x86 boot loader using the NASM assembler and delve into its functionalities. [Read More]

X86 Boot Loaders

 Posted on May 7, 2024  |  

X86 Boot Loaders in Assembly The booting process of any modern computer relies on a series of stages, culminating in the execution of the operating system. The first stage of booting is the boot loader, responsible for initializing the system and loading the next stage of boot (typically the operating system kernel) into memory. For X86 processors, boot loaders are typically written in assembly language. This is due to their close proximity to the hardware and their need to perform specific tasks efficiently. [Read More]

Navigating GDI

 Posted on May 7, 2024  |  

Navigating the Labyrinth of GDI in .NET: A Guide for the Lost Souls Ah, GDI. A land of mystery, where lines blur with curves, and fonts dance with fate. It’s a land where pixel perfection reigns supreme, and where every brushstroke has the power to make or break your application. But fear not, weary traveler! This blog post is here to guide you through the treacherous terrain of GDI in . [Read More]

Using Lockbits

 Posted on May 7, 2024  |  

Using the LockBits Function on Bitmap Objects in C# The LockBits function in C# provides a way to access the raw pixel data of a bitmap object directly. This can be useful for performing operations on the pixel data, such as blurring, sharpening, or converting to grayscale. Syntax The LockBits function has the following syntax: BitmapData bitmapData = bitmap.LockBits( new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format32bppArgb ); bitmap is the Bitmap object whose pixel data you want to access. [Read More]

Entity Framework N Plus 1

 Posted on May 7, 2024  |  

Performance Problems with N+1 Queries in Entity Framework N+1 queries are a common performance issue in Entity Framework that can significantly impact the performance of your application. They occur when you perform multiple database queries for each entity in a result set. For example, imagine you have an entity called “Customer” and you want to get all the orders for a specific customer. In an N+1 query scenario, you would first query for the customer, then for each order associated with the customer, you would query the database again to get the customer details for that order. [Read More]

Entity Framework Lazy Loading

 Posted on May 7, 2024  |  

Performance Problems with Lazy Loading in Entity Framework Lazy loading is a powerful feature of Entity Framework that allows for efficient data retrieval by loading data only when it’s needed. However, it can also lead to performance issues if not used carefully. What is Lazy Loading? Lazy loading is a technique where related entities are not loaded immediately when a parent entity is retrieved from the database. Instead, they are loaded on-demand when they are accessed. [Read More]

Migrate from LINQ to Entity Framework

 Posted on May 7, 2024  |  

Transitioning from LINQ to Entity Framework with C# LINQ (Language Integrated Query) is a powerful tool for querying and manipulating data in C#. However, it can be cumbersome for complex scenarios and doesn’t provide built-in support for database operations like migrations and relationships. This is where Entity Framework comes in. Entity Framework is an object-relational mapper (ORM) that simplifies database interactions in C#. It allows developers to work with entities (objects representing database tables) and query them using familiar C# syntax. [Read More]