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inaccessible boot device

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Hello,

unfortunately I have a massive problem. The background:
The attempt to disable the Bitlocker on the system partition of my laptop unfortunately broke off in the middle of it. This means that access to it is no longer possible, neither with nor without a key.

Luckily, a weekly backup to a NAS is made. I copied this onto a USB disk. I also had a second, largely identical M.2 SSD in reserve. I installed these and then waited expectantly to run the restore.

So far so good. Unfortunately, however, in the end very, very bad. Because no boot is possible. Each attempt ends with "inaccessible bootdevice". However, the data is available on C:, as a test via cmd from the advanced boot options shows.

What could be the problem here? What can I do?

Best regards from Berlin
René

Addendum:
At the end of the day it was actually only a single start in "safe mode" (hope the translation fits here), and the problem was fixed.
It's still unclear to me why another M.2 SSD apparently needed a different driver here. However, this seems to be much more complex than it used to be when swapping SATA disks, where only the controller needed a suitable driver.

René

0 Users found this helpful

René, welcome to these public User Forums.

Not sure how you were trying to do the restore but the recommended method is to boot from Acronis rescue media, ideally this should have been created using the 'Simple' option that makes Windows PE rescue media using files from your Windows Recovery Environment (WinRE) so that drivers needed for your hardware is included.

Having BitLocker in the mix can complicate things but if you have created your backups from within Windows, then the backup image does not have BitLocker encryption so can be restored to a new or a formatted same drive.

I haven't come across different M.2 SSD drives needing different drivers but this is quite possible depending on the technology the drives use, i.e. if they include Intel Optane or VMD components to improve performance, then they will need additional device drivers.

It is good to read that booting into Windows Safe Mode was sufficient to help resolve this issue for you.