Macrorit Disk Partition Expert Common Errors – Solution

Macrorit Disk Partition Expert Common is a specialized utility designed to manage hard drive partitions on Windows systems when the native Disk Management tool falls short. While generally reliable for resizing, moving, and formatting drives, users may occasionally encounter errors due to file system locks, bad sectors, or partition table limitations. This guide addresses the most frequent technical setbacks users face during partition operations and provides verified methods to resolve them without compromising data safety.

Common Errors

• Option "Extend Volume" Greyed Out: The function is disabled because unallocated space is not adjacent to the target partition.
• Error Code 3810 (err_is_volume_mounted): The operation failed because the volume is currently in use or mounted by the system.
• Cannot Lock Volume: Background services or antivirus software are preventing the program from obtaining exclusive access to the drive.
• Bad Sectors Detected (Red Dots): Surface tests reveal physical damage to the disk platter, preventing safe partition modification.
• MBR Partition Limit Reached: Error occurs when attempting to create more than four primary partitions on an MBR disk.

Fix 1: Extend Volume Greyed Out

This is the most frequent issue users encounter. In Windows, you can only extend a partition if the unallocated space is located immediately to its right. If another partition sits between them, the option remains unavailable.

1. Launch Macrorit Disk Partition Expert and locate the partition blocking the unallocated space.
2. Right-click this obstructing partition and select Resize/Move Volume.
3. In the popup window, place your mouse cursor in the middle of the partition bar and drag the entire block to the left.
4. Click OK. You will see the unallocated space has moved to the right side of the target partition.
5. Now, right-click the target partition (e.g., C: Drive), select Resize/Move Volume, and drag the right edge into the unallocated space to extend it. Click Commit to apply changes.

Fix 2: Error 3810 (err_is_volume_mounted)

This error code appears when the software cannot dismount a drive because Windows or another application is actively using it. This often happens during operations on the system drive (C:) or active data drives.

1. Click Tools in the top menu and select Create Bootable Media.
2. Insert a USB drive and follow the prompts to create a WinPE (Windows Preinstallation Environment) disk.
3. Restart your computer and boot from the USB drive (usually by pressing F12 or Del during startup).
4. Macrorit will launch automatically in this environment.
5. Retry the partition operation. Since Windows is not running, the volume will not be locked, allowing the process to complete successfully.

Fix 3: Cannot Lock Volume

Similar to Error 3810, this message indicates that a specific process, such as an antivirus scan or a backup utility, has locked the drive. You must terminate these connections to proceed.

1. Close all running applications, including web browsers and folder windows.
2. Temporarily disable your antivirus software (e.g., Windows Defender or third-party tools).
3. If Macrorit prompts you to Force Dismount, select Yes. This forcibly closes open handles to the drive.
4. If the error persists, use the Restart to Pre-OS mode if the software offers it, or revert to the WinPE solution described in Fix 2.

Fix 4: Bad Sectors Detected

If a partition operation fails or hangs indefinitely, your hard drive may have physical defects. Macrorit includes a scanner to verify disk health.

1. Right-click the disk (Disk 0, Disk 1, etc.) and select Surface Test.
2. Click Scan Area to define the range or leave it default to scan the whole disk.
3. Click Start Now. Watch for red dots in the grid, which indicate bad sectors.
4. If red dots appear, stop immediately. Software cannot fix physical damage.
5. Back up your data to an external drive instantly and consider replacing the hard drive, as partition operations on damaged disks can lead to total data loss.

Fix 5: MBR Partition Limit Reached

Legacy MBR (Master Boot Record) disks support a maximum of four primary partitions. If you try to create a fifth, you will receive an error or the option will be unavailable.

1. Identify if you need to keep the disk as MBR or if you can switch to GPT (GUID Partition Table).
2. To bypass the limit on MBR: Right-click an existing primary partition and select Convert to Logical. This allows you to create multiple logical partitions inside an extended partition.
3. To remove the limit entirely: Right-click the disk label (e.g., Disk 1) and select Convert to GPT.
4. Warning: Only convert the system disk to GPT if your motherboard supports UEFI boot mode. Verify this in your BIOS settings before converting.
5. Click Commit to finalize the conversion.

Prevention Tips

• Check Disk Health First: Always run a Surface Test or Windows CHKDSK before resizing partitions to ensure the drive is stable.
• Close Background Apps: Shut down unnecessary programs to prevent file locking issues during operations.
• Backup Vital dаta: Although Macrorit is safe, power outages during partition resizing can corrupt data. Always have a backup.
• Use WinPE for System Drives: For major changes to your C: drive, booting from USB media is safer and faster than modifying it while Windows is running.

When to Contact Support

If you encounter unique error codes not listed here, or if the software freezes during the "Committing" phase, do not force a restart as this may damage the partition table. Contact Macrorit technical support immediately.

Before contacting them, locate the log file (usually found in the installation folder) and take screenshots of the error message. Providing the exact error code (e.g., 0x00004642) and your Windows version (10 or 11) will help the support team diagnose the issue faster.