![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Hi, JonnyHotchkiss.
Thank you for posting in the Microsoft Community.
From your description, I understand that you want to make Windows on the original hard drive bootable again, the system has been severely damaged and there is no recovery partition, and you have tried the bootsec and bootrec commands. I understand your confusion about this problem.
Bootrec is mainly used to repair boot records, boot files, and rebuild boot configuration data, while bootsec is mainly used to repair boot sectors or master boot records and repair UEFI boot problems.
In Windows, you can confirm the partition style of the hard drive through the Disk Management tool:
- Press Win + X, then select Disk Management.
- Find your system drive (usually C drive), right-click it and select Properties.
- Go to the Volume tab and check the Partition Style:
- If you see GPT, it means the hard drive is a GPT partition and the system should be in UEFI mode.
- If you see MBR, it means the hard drive is an MBR partition and the system should be in BIOS mode.
Your current BIOS settings have Legacy boot enabled and Secure Boot disabled, which means that you boot your system based on BIOS/MBR boot mode. You mentioned that Windows Boot Manager (UEFI) seems to load Windows 11 through vhd (virtual hard disk), which may mean that your system or some partitions have used UEFI mode (such as Windows Boot Manager itself).
The convert gpt command you mentioned is used to convert an MBR disk to a GPT disk. Indeed, this command will erase the entire disk, so it is destructive. Before executing convert gpt, make sure you have backed up the data on the disk because the command will delete all partitions on the disk.
You should set the startup disk to Yes in the following situations:
- When installing or restoring the operating system, select the partition containing the boot files as the startup disk.
- When changing the operating system boot order, select the disk or partition you want to boot the operating system as the default.
- When repairing boot problems, make sure the partition containing the boot files is marked as the startup disk.
You mentioned that you accidentally turned the disk into a dynamic disk when trying to add a simple volume through Disk Management. Dynamic disks can cause some problems, especially when booting configuration and recovering the operating system, and it is usually recommended to use a basic disk. I am glad to hear that you restored it to a basic disk state through the Aomei tool.
You mentioned that you tried bootsect /nt60 but received "Access Denied" and "Volume Locked" error messages. This problem usually occurs when:
You are not running the command prompt with administrator privileges. Make sure to start the command prompt with administrator privileges (right-click "Command Prompt" and select "Run as Administrator").
The partition may be occupied by the operating system or other programs, preventing bootsect from modifying the boot record. In this case, restarting the computer and entering Windows PE or Recovery Environment and then running bootsect from there can usually avoid this problem.
In addition to this, you can also try an in-place upgrade. If the in-place upgrade does not solve your problem, you can reinstall the Windows operating system using USB media and try to reference the virtual hard disk again.
Windows in-place upgrade - Configuration Manager | Microsoft Learn
Disclaimer: Please back up your relevant data before reinstalling the Windows system.
We look forward to hearing from you!
Best Regards.
Capoo - MSFT | Microsoft Community Support Specialist