disk info doc

Linux/Basic Administration/24-disk-info.md

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+# 💽 **Disk Partition Types & Commands Guide**
+
+## 🗂 **Partition Types**
+
+### 1️⃣ **MBR (Master Boot Record)**
+
+* 📏 **Max Disk Size:** 2 TB
+* 📦 **Partition Entries:** 4
+
+---
+
+### 2️⃣ **GPT (GUID Partition Table)**
+
+* 📏 **Max Disk Size:** 9 ZB (zettabytes)
+* 📦 **Partition Entries:** 128
+
+---
+
+## 📊 **Disk Space & Usage Commands**
+
+### 🖥 **`df` – Show Disk Space Usage**
+
+The `df` command displays information about available and used disk space.
+
+| Command               | Description                              |
+| --------------------- | ---------------------------------------- |
+| `df`          | 📄 Show disk space in default format     |
+| `df -h`       | 🧍 Human-readable sizes (e.g., GB, MB)   |
+| `df -T`       | 📂 Show file system type                 |
+| `df -i`       | 🔢 Show inode usage                      |
+| `df -h /home` | 🏠 Show usage for `/home` directory only |
+
+---
+
+### 📦 **`du` – Show Disk Usage**
+
+The `du` command shows how much space files and directories take up.
+
+| Command                       | Description                              |
+| ----------------------------- | ---------------------------------------- |
+| `du`                  | 📄 Show disk usage in blocks             |
+| `du -h`               | 🧍 Human-readable sizes                  |
+| `du -sh`              | 📊 Summary of current directory          |
+| `du -h --max-depth=1` | 📂 Usage per subdirectory (1 level deep) |
+
+---
+
+## 🔍 **Disk & Partition Information Commands**
+
+### 💿 **`lsblk`**
+
+Shows partitions, disks, sizes, and mount points.
+
+```bash
+lsblk
+```
+
+---
+
+### 🆔 **`blkid`**
+
+Displays partition UUIDs and types.
+
+```bash
+blkid
+```
+