Partition and MBR in Linux

TL;DR

Learn about the concept of partitions, different types of formatting (physical and logical), and the maximum number of partitions that can be created.

Transcript

hey there everyone they sure back again with another video and welcome back to the Linux series and let's move forward so in the last video we learned how to install a linux onto a virtual machine and the process is almost exactly same for Ubuntu any other debian flavor most of the Red Hat flavors as well so but the most important part about is the... Read More

Key Insights

• ❓ Linux partitions involve both physical and logical formatting processes.
• 👣 Physical formatting creates sectors, tracks, and cylinders on a hard disk using magnetic fields.
• ✍️ Logical formatting handles the writing of sectors, partition table management, and sector size determination based on the operating system.
• 🪛 Only four partitions can be created on a drive, with three primary partitions and one extended partition.
• ⌛ Primary partitions are where the operating system is installed, and only one can be active at a time.
• 🪛 Logical drives can be created within the extended partition to segment data.
• 💁 The Master Boot Record (MBR) is the first sector on the hard drive storing partition table information and bootloader details.

Questions & Answers

Q: How many partitions can be created on a drive?

Only four partitions can be created on a drive, with three primary partitions and one extended partition. Logical drives can be created within the extended partition to give the illusion of multiple drives.

Q: What is the difference between physical and logical formatting?

Physical formatting creates sectors, tracks, and cylinders using magnetic fields. Logical formatting involves writing sectors, managing partition tables, and determining sector size and positions based on the operating system.

Q: What is the maximum number of primary partitions that can be active at a given time?

Only one primary partition can be active at a time, which is where the operating system is running. Additional primary partitions can exist but cannot be simultaneously active.

Q: What is the significance of the Master Boot Record (MBR)?

The MBR is the first sector on the hard drive that stores information about the partition table and the bootloader. If the MBR or bootloader is corrupted, access to the operating systems may be lost.

Summary & Key Takeaways

• The video discusses the importance of understanding Linux partitions and explains the process of physical formatting and logical formatting.

• Physical formatting is the creation of sectors, tracks, and cylinders on a hard disk using magnetic fields.

• Logical formatting is responsible for writing sectors, managing the partition table, and determining sector size and positions.