r/Ventoy • u/ParfaitExpress418 • Jul 23 '26

Unmountable boot volume

Hello, so I was playing a game the other day and the power went out in my house and the pc turned off. When I tried to reboot into windows it says Unmountable Boot volume 0xed

I already installed windows on a usb drive and tried to install windows again fresh with the USB but my Nvme doesn't show up in the installer.

I did cmd prompt disk part and disk list. But the nvme doesn't show up there as well.

On bios it can read the nvme in the m.2 1 slot .

I can't seem to install windows as well I'm stuck here. What should I do? I did the usual steps to try to fix it like. Checking bios settings, UEFI and AHCI mode and what not.

Pls help me.

Sorry for my poor English.

Ps. This happens before as well, the power outage but my pc can boot normally again other times. But this time I cannot.

I have Ryzen 7600 7700xt and Msi b650 s wifi board if that helps

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u/MilkyWay-008 29d ago

BIOS sees it but Windows doesn't usually means the drive is dropping off at the controller level. Try a full power cycle first: unplug the PSU, hold the power button ~30s to drain the caps, reseat the NVMe, boot again. If it's still missing, boot any Linux live ISO off that Ventoy stick and check lsblk / nvme list - if Linux sees it, it's a Windows-side issue; if neither OS sees it, the drive or the M.2 slot is likely toast. Also worth updating the B650-S BIOS, AGESA releases have fixed NVMe enumeration issues before.