For example, some users might be trying to upgrade from Windows 7 to 10. The full error message states: Failed to format the selected partition. (Error 0x8004242d). As a consequence, users can’t format the drive partition and install the platform.

How can I fix error 0x8004242d?

1. Convert a dynamic disk to basic disk

Users can also convert dynamic disks to basic disk with drive partition software without data loss. However, few freeware drive partition versions include their dynamic to basic disk conversion features. Nevertheless, you might be able to find some freeware drive partition software that do enable users to convert dynamic disks to basic.

2. Clean the drive with Diskpart

3. Disable UEFI boot support

Error 0x8004242d can also arise when UEFI Boot Support is enabled on systems that support both legacy BIOS and UEFI boot modes. To fix that, you’ll need to press BIOS Setup key (such as F2, F4, F6, etc) just after turning on your desktop or laptop. Select the Boot tab when you’re in the BIOS settings. Then select a UEFI/BIOS Boot Mode option to select Legacy (BIOS) instead of UEFI.

Those are a few of the confirmed methods for fixing the error 0x8004242d partition error. Do be careful with resolutions one and two as both will erase selected disk or volume data.

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