Updating to version 1903, operating system is running MBR instead of GPT
Updating to version 1903, operating system is running MBR instead of GPT
He mentioned every disk is an MBR, which he verified. If he disconnects all except the system and boots from the installer, he can use the mbr2gpt utility. The conversion process works regardless of BIOS settings. Should OP prefer to keep using MBR, he might need to adjust the boot sequence first before proceeding with the change.
As discussed earlier, I neglected to disconnect the old SATA SSD before installing it on the NVMe drive initially, causing several issues that I initially resolved by reinstalling everything with the old drives removed. The major problem appeared after the large v1903 update, which prevented installation and displayed a message stating Windows 10 couldn't run. According to the information I found online, I wasn’t permitted to create a volume or partition on the drive I wanted to convert—this seems confusing since it’s essentially an empty drive. However, I might be misinterpreting something. I still want to switch to GPT format for the NVMe drive. It appears Windows is resisting updates, and if GPT is the newer standard, I should consider using it.
Turn off all other drives except the M.2, launch the USB installer in legacy mode, select 'fix boot', verify if the computer starts, restart the installer, press Shift+F10 and follow any instructions you find online. Switch the boot mode to UEFI and that's it. BUT - I’m not sure what you mean by “blank drive anyway.” You already have a system installed on that drive, as mentioned in your first post.
I was talking about the condition that two guides need to be referenced, and the drive shouldn't have a volume or partition if mbr2gpt could operate.
Not accurate. MBR2GPT was designed to transform a working operating system from MBR to GPT. I performed this kind of change last week; it usually lasts 5-10 seconds, after which you can boot in UEFI mode (after adjusting BIOS settings post-conversion). You only need a functional legacy installation—your PC must start in legacy mode; otherwise, use the repair option in the Windows installer USB in legacy mode. Make sure to disconnect all drives except the system drive. Typically the whole process takes 5-10 minutes, and you should wait a few days for completion. https://docs.microsoft.com/en-gb/windows...mbr-to-gpt
I’m confident I’ll proceed with this attempt. The minor update hiccup is the only exception, so it should work fine. Given my previous struggles with similar problems that messed up my OS, I thought it wise to gather more details beforehand. Thanks once more! – Jonas
I've been really occupied and didn't have time to resolve the problem until last weekend, but it's now fixed and performing well (almost). After updating to v1903, I encountered bluescreens, but when I rechecked the BIOS settings and restarted, the issue disappeared. It's still a bit uncertain, but everything seems to be working now. Thanks for your assistance!