Windows 10: What to do if i get "inaccessible boot device" error, having 2 ssd's with OS on them.

In short, I got a new laptop with an SSD running Windows 11. This SSD is not partitioned. I connected a second SSD from an old laptop with Windows 10 to a free slot; it is divided into partitions type C and D. When I launch an SSD with Windows 11 through the boot menu, I can easily work with files from an SSD with Windows 10. However, when I connect through the boot menu with an SSD with Windows 10, I get the error “inaccessible boot device”. Any recovery does not work. What is my need: for me to have an SSD with Windows 10 as the main one, so that I can work with it, that it is like C:, wit

:)

 

SSD inaccessible boot device

I recently changed my motherboard to a MSI B250M Gaming Pro and for the first 2 days Windows 10 Pro was booting completely fine on my Samsung Evo 850 500gb SSD until last night where I kept receiving the error inaccessible boot device. I have placed a
copy of Windows onto one of my hard drives and tried to copy over the information onto my SSD (after I formatted it) but I still keep getting the inaccessible boot device error. All help is appreciated.

 

Unable to boot new SSD "Inaccessible Boot Device" error

I recently upgraded my HP Laptop with a Crucial P5 Plus 500GB PCI 4.0 NVMe SSD from a 250GB SATA M.2. The cloning appears to have been successful ( I have an SSD enclosure and can access all the old data files in the new SSD when I run it as an external drive from another computer). The problem is that when installed , the new drive just won't boot and I get a "Inaccessible Boot Device" error. Not being sure if it was a HDW compatibility issue I tried and was able to successfully install and run Windows 11 in a separate volume on the new cloned Drive (which originally also has Windows 11 ) . Being a Newbie, is it possible to copy the "Boot files and/or drivers" to the new windows from the old windows on the same drive? I have a lot of programs and would prefer not to have to uninstall and reinstall. Any suggestions are most appreciated.

 

inaccessible M.2 SSD boot device

Can anyone help?
Since end of January 2018 my windows 10 pro system (payed for)

is unstable and now refuses to load the OS from the Samsung 960 Pro M.2 SSD device.

The blue screen says "inaccessible boot device".

This is my work-workstation and I have installed on it several commercial software.

I am trying now since 5 days to make it run. Here are the details:
computer: CPU: Intel Core i7-6800 K (not overclocked), MB: MS-7885 (X99AA SLI Plus)

BIOS version: msi click bios 5 (build 07/15/2016)

Graphics card: Nvidia GTX 1080, 64 GB memory DDR4 at 2400 GHz
what happens:

- the os starts loading and after some time spits out the blue screen (two dots left on

rotating widget). In any case, it seems to load from C: and then run

into some trouble related to the M.2 SSD
already done:

- several times went back to recovery points and they worked twice for a while.

Now nothing helps.

- the recovery says it is successful but the login generates a blue screen,

- tried to use easyRE from neosmart, it also failed to mount the root partition

- fixed the mbr and the boot device manager, did not help

- tried all possible variants of BIOS settings which might help, nothing worked

- installed a disk from another computer with running win 10 pro installation: this

did boot. That system DOES see the Samsung SSD, so the BIOS seems OK.

- run the SSD for errors, not any found.

- when changing back the boot order, the SSD is still not found and the login fails
So, before doing harm may be you have some good idea of what happens and what

might help short of the nuclear option of reinstalling all the software.

Has anyone run into similar troubles? Many thanks!