Complete Guide to Hard Disk Partitioning: How to Do It Safely

The partitioning of a hard disk is a process that allows you to divide a storage unit into separate spaces, called partitions. This operation is useful for efficiently organizing data, installing multiple operating systems on the same computer, and protecting files from accidental loss during system recovery or formatting.

Partitioning is particularly useful for technical users, system administrators, and anyone who wants to optimize the use of their hard drive. Through partitioning, you can create independent areas for different purposes, such as personal data storage, installation of specific software, or management of multiple operating systems.

There are three main types of partitions: primary, extended, and logical. Primary partitions can contain files and operating systems, while extended partitions serve as containers for logical partitions, which in turn can host any type of data. This system allows you to bypass the limits of creating primary partitions in BIOS and MBR-based systems, enabling you to create a larger number of volumes on the disk.

Each partition must be formatted using an appropriate file system, such as FAT32, NTFS, ExFAT, HFS+, APFS, EXT2, EXT3, EXT4, or ReiserFS. The choice of file system depends on the devices on which you intend to use the unit and the type of information it must contain.

Prerequisites

To partition a hard disk, you will need the following hardware and software tools:

• A computer with Windows 11, Windows 10, Windows 7, or macOS operating system.
• An internal or external hard disk to partition.
• A backup of all important data on the disk to be partitioned.
• Internet access to download any additional drivers or software.

How to partition hard disk: Windows 11 and earlier

Following this guide, you will learn how to manage partitions of external drives and internal disks on Windows, using the built-in tool "Disk Management".

• Press the key combination Win+X on the keyboard or right-click the Start button.
• Select the option Disk Management from the menu that appears.
• Alternatively, open the Start menu, type partitions in the search field, and select Create and format hard disk partitions.

In the window that opens, locate the disk bar on which to intervene in the lower part of the window. Here are all the partitions visible, with information on the file system, size, and type of each.

Delete a partition

• Right-click on the box of the partition of interest.
• Confirm the operation by clicking on Yes.

If you have deleted the volume of a primary partition, it will be marked as unallocated space and can be used to extend other contiguous primary partitions.

Delete an extended partition

• Delete all logical partitions within the extended partition.
• Right-click on the extended partition now without logical partitions.

Extend a partition

• Make sure there is contiguous unallocated space immediately to the right of the partition to be extended.
• Click on Next to start the guided procedure.
• Verify that in the box Selected the amount of unallocated space to be reassigned is present.
• Press the buttons Next and Finish and wait for the operation to complete.

VERIFICATION AND TROUBLESHOOTING: How to test if it works and what to do if it fails

After partitioning your hard disk, it is essential to verify that the process has been successful and that the new partitions are correctly recognized by the operating system. Here's how to proceed:

Partition verification

• Windows: Open "Disk Management" (press Win+X and select the corresponding option). Verify that the new partitions are listed in the list of disks and drives. Check that the file system, size, and type of each partition are correct.
• macOS: Open "Disk Utility" (find it via Spotlight or in the "Utilities" folder). Select the disk and verify that the partitions are listed correctly. Check that the file system and size are as desired.

Partition testing

• Try copying and moving files to the new partitions to verify that they are accessible and functional.
• If you have created a partition for the installation of an operating system, boot the computer from that partition to ensure that the operating system starts correctly.

Troubleshooting

If something does not work as expected, here are some steps to follow:

• Partitions not recognized: If the partitions do not appear in "Disk Management" or "Disk Utility", restart the computer and check again.
• Formatting error: If you receive an error during formatting, make sure you have selected the correct file system and have the necessary permissions.
• Boot problems: If the operating system does not boot from the new partition, verify that the BIOS/UEFI is configured correctly to boot from that partition.
• Unallocated space: If you have unallocated space that you cannot use, make sure it is contiguous to the partition you want to extend.

If the problems persist, consult the official documentation of your operating system or search for specific solutions online.

Educational Summary and Invitation to Practice

Now you are ready to organize your data best and optimize disk usage.

Always remember to create a backup of your important data before proceeding with any partitioning operation. Follow the steps described carefully and use the appropriate tools for your operating system.

• For Windows, use Disk Management to create, delete, or modify partitions.
• Choose the file system most suitable for your needs, considering compatibility with the devices you will use.

Put yourself to the test and start partitioning your hard disk following the instructions provided. If you have doubts or encounter problems, carefully reread the steps and make sure to follow every detail with precision.