Another program (antivirus, Windows Disk Management) locks the drive. Solution: Close Explorer windows, disable real-time AV scanning temporarily, or run DiskGenius from a bootable USB (DOS version).
DiskGenius is a multi-functional utility born from the classic DOS-era tool "PTD" (Partition Table Doctor). Over the years, it has grown into a robust solution for: diskgenius windows xp
Modern tools are bloated with UEFI and GPT support for Windows 10/11. Windows XP uses the classic . DiskGenius’s MBR tools are faster, simpler, and more reliable on XP because they aren’t distracted by GUID Partition Table (GPT) overhead. Another program (antivirus