When you see “Inaccessible Boot Device”, it means your computer cannot read the Windows partition on the hard drive it boots from. What’s worse, some users are stuck in endless boot loop where Windows tells SSD is inaccessible and where it tries to fix the error but constantly fails. Some users meet the problem at startup after they upgrade SSD while some have the issue after they reset their computer. Inaccessible boot device on Windows 10 SSD is one of the most common BSoD（Blue Screen of Death）errors. If I could know what would happen if I did that I'd give it a go.Problem: inaccessible boot device on Windows 10 SSD I know I could change or remove the drive letters in the recovery command prompt diskpart, but I don't know if that would fix the problem and don't want to mess up my stable point with the old SSD connected by assigning the new drive the C: letter as well, then maybe not being able to plug them in at the same time.
I've seen some other questions mention a bcdboot command and/or using regedit to change the boot information of the 2 drives in HKEY_LOCAL_MACHINE\System\MountedDevices, but would need more guidance on how to do it properly or if it's even necessary, especially since in that situation he wanted to change his boot drive to a new drive and letter while keeping the old one attached, and I don't. That's everything factual I know, and now time for some speculation: It has something to do with the different drive letters, or the differences in the Status tags after Healthy in disk management (or more accurately, what they indicate). Here are screenshots from diskpart and disk management with my computer running from the original C: drive:Īnd a picture from my phone of the command prompt diskpart when booting from the new drive (old SSD removed), with some weirdly rearranged drive letters: If I restart from there, on reboot I'm in the "recovery area", a 1024px blue environment with a bunch of boxes with icons in them (not sure what it's actually called) with options like access to the command prompt and to fresh install windows, but I don't want to do that if possible.
However when I try boot from the new drive by selecting it in the BIOS boot menu I get a bluescreen error with the code INACCESSIBLE BOOT DRIVE. I cloned the partitions from my old drive to the new drive and increased the main partition space to fill it up, using Macrium Reflect.
I'm trying to upgrade my SSD with Windows 10 and a few programs on it from a 120GB model to a new 500GB one, and I've had a fair amount of trouble but am now at the point where I need help.
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