Diskpart Efi Extended Logical Solusi

𝕸𝖆𝖘 𝕬𝖓𝖉𝖞 𝕯𝖎𝖌𝖎𝖙𝖆𝖑 𝕸𝖊𝖉𝖎𝖆

3 min read

·

May 15, 2025

36

Share

The Complete Guide to Resolving Diskpart EFI System Partition Issues

This comprehensive guide tackles common problems encountered when managing EFI System Partitions (ESP) using Diskpart, a powerful command-line disk management utility in Windows. We'll cover troubleshooting, solutions, and best practices to ensure a smooth and efficient experience.

Understanding the EFI System Partition (ESP)

The ESP is a crucial part of modern Windows systems, particularly those using UEFI firmware. It stores boot loaders and other essential files required for booting the operating system. Problems with the ESP can lead to boot failures and system instability. Diskpart, while powerful, requires careful use to avoid data loss. Always back up important data before attempting any Diskpart operations.

Common ESP Problems and Diskpart Solutions

Here are some of the most frequent issues and how to address them using Diskpart commands:

1. ESP is too small or missing:

This often happens after a failed installation or disk partitioning. If the ESP is missing or too small, you might encounter boot errors.

• Solution: You'll need to create a new ESP. This requires careful planning and understanding of your disk layout. Never attempt this without a full backup! The correct size is typically 100-500MB. The following steps outline the process:

  1. Open an elevated command prompt (Run as administrator).
  2. Type diskpart and press Enter.
  3. Use list disk to identify your target disk.
  4. Select the disk using select disk <disk number>.
  5. Create a new partition using create partition efi size=<size in MB>.
  6. Format the partition as FAT32 using format fs=fat32 quick.
  7. Assign a drive letter using assign letter=<drive letter>.
  8. Exit Diskpart using exit.
  9. Crucially, you'll likely need to rebuild the BCD (Boot Configuration Data) using the bootrec command. Refer to Microsoft's documentation for detailed bootrec instructions.

2. ESP is corrupted:

Corruption can result from various factors including power outages, malware, or faulty hardware. This can prevent Windows from booting correctly.

• Solution: In this scenario, the goal is to repair or recreate the ESP.

  1. Attempt Repair (If possible): Before resorting to recreating the ESP, try using the chkdsk command (check disk) with the /f (fix errors) and /r (locate bad sectors and recover readable information) options. Be aware this process can take some time.
  2. Recreate ESP: If repair fails, follow the steps outlined in solution 1 to create a new ESP. Remember to back up your data! This solution might involve reinstalling your operating system as the boot files will need to be recreated.

3. ESP is not marked as active:

The ESP needs to be marked as active for the system to boot correctly.

• Solution:

  1. Open an elevated command prompt.
  2. Type diskpart and press Enter.
  3. Use list disk, select disk, and select partition commands to select your ESP.
  4. Use the active command to mark the partition as active.
  5. Exit Diskpart.

Important Considerations:

• Data Backup: Always back up your data before making any changes using Diskpart. Data loss can occur if commands are entered incorrectly.
• Administrator Privileges: Diskpart requires administrator privileges to execute commands.
• System Knowledge: Understanding your system's disk layout is critical before undertaking any Diskpart operations. Incorrect commands can render your system unbootable.

This guide provides a general approach. The specifics might vary depending on your system's configuration. If you encounter difficulties, it's always recommended to seek assistance from experienced IT professionals. Consult Microsoft's documentation for more detailed and advanced usage of Diskpart. Remember, caution and precision are key when working with Diskpart!