# Linux: Disk Partitioning and Formatting a Filesystem 🐧💻

## 🛠️ **Partitioning with `parted`**

* **Overview**: In Linux, the `parted` tool is used for disk partitioning and supports both MBR (Master Boot Record) and GPT (GUID Partition Table) partitioning schemes.
* **Modes**:
  * **Interactive Mode**: Launches a separate program for user interaction.
  * **Command Line Mode**: Allows running commands directly in the shell.

## 🔍 **Viewing Disks**

* **Command**: `sudo parted -l`
  * Lists all connected disks and their partitions.
  * Example Output:
    * `/dev/sda`: 128GB disk with existing partitions.
    * `/dev/sdb`: 8GB USB drive with no partitions yet.

## 🛠️ **Partitioning a Disk**

1. **Selecting the Disk**:
   * Use: `sudo parted /dev/sdb`
   * This starts the `parted` tool for the selected disk.
2. **Creating a Partition Table**:
   * Command: `mklabel gpt`
   * Sets the partition table to GPT.
3. **Creating Partitions**:
   * Command: `mkpart <type> <filesystem> <start> <end>`
     * **Type**: Partition type (primary for GPT).
     * **Filesystem**: The file system to format (e.g., ext4).
     * **Start/End**: Defines partition size.
     * Example: `mkpart primary ext4 1MiB 5GiB` creates a 5GiB partition.
4. **Formatting the Partition**:
   * Command: `sudo mkfs -t ext4 /dev/sdb1`
   * Formats the newly created partition with the ext4 file system.

## 🧮 **Data Measurement**

* **Exact vs. Estimated Sizes**:
  * **Mebibyte (MiB)**: 1 MiB = 1024^2 bytes.
  * **Gibibyte (GiB)**: 1 GiB = 1024^3 bytes.
  * **Kilobyte (KB)** and **Gigabyte (GB)** use 1000 bytes and 1000^3 bytes, respectively.

## 📁 **Mounting the Filesystem**

* **Final Step**: To use the disk for reading and writing files, you must mount the file system to a directory.
* **Command**: `mount /dev/sdb1 /mnt/your_mount_point`

## ⚠️ **Caution**

* Be cautious with `parted` as incorrect modifications can lead to data loss. Always double-check the disk and partition details before proceeding.

Partitioning and formatting a disk with Linux's `parted` tool can efficiently manage and prepare storage, but requires careful handling to avoid mistakes. 🚀🔧