Based on the provided context from the Gentoo Wiki, here's a well-structured comparison of Master Boot Record (MBR)
Based on the provided context from the Gentoo Wiki, here's a well-structured comparison of Master Boot Record (MBR) and GUID Partition Table (GPT):
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- **MBR**: Supports a maximum of **4 primary partitions**. Additional partitions can be created within an **extended partition** (logical partitions inside the extended partition).
- **GPT**: Supports up to **128 primary partitions** directly, without the need for extended/logical partitions.
- **MBR**: Limited to disks of **2 TB (2^40 bytes)** or smaller. This is due to the 32-bit partition table and the Master Boot Record's structure.
- **GPT**: Supports disks larger than **2 TB**, with a maximum size of **8 ZiB (zettabytes)**. This is due to the use of 64-bit GUIDs and partition entries.
- **MBR**:
- Contains a single boot record, which can limit boot manager options.
- Less redundancy; the entire partition table is stored in the first sector.
- **GPT**:
- Stores multiple copies of the partition table (typically at the start and end of the disk), improving data recovery chances.
- Supports features like **UEFI** (Unified Extensible Firmware Interface) for secure boot and faster boot times.
- **MBR**:
- Widely supported by older BIOS systems and operating systems like Windows, Linux, and others.
- Required for systems using the **BIOS** firmware.
- **GPT**:
- Primarily used with **UEFI** systems.
- Supported by modern operating systems, including Linux (via GRUB) and Windows 8/10/11.
- **MBR**:
- Suitable for disks **2 TB or smaller**.
- Ideal for systems using **BIOS** firmware.
- Recommended for compatibility with older hardware and software.
- **GPT**:
- Ideal for disks **larger than 2 TB**.
- Recommended for systems using **UEFI** firmware.
- Preferred for modern systems requiring advanced features like secure boot.
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| Feature | MBR | GPT | |------------------------|------------------------------|------------------------------| | **Maximum Partitions** | 4 primary (or 4 extended + logical) | Up to 128 primary | | **Disk Size Limit** | 2 TB | Up to 8 ZiB | | **Firmware Support** | BIOS | UEFI | | **Redundancy** | Low | High (multiple copies) | | **Use Case** | Older systems, small disks | Modern systems, large disks |
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