The NTFS partition works on the system drive but fails to boot.
The NTFS partition works on the system drive but fails to boot.
It's good to know that I turned it off before these problems started. Fast Startup is usually the first thing I disable on new setups and after SSDs came along, it creates more problems than it solves. Those who thought locking it behind a link called "Choose What your Power Button Does" was smart should be surprised! If you still want the second drive to boot, you might try a successful boot repair using Windows install media, but first disconnect or disable the C: drive.
Which repair technique are you referring to? I attempted several options as discussed in your original post.
As part of my KISS rule, after removing the good drive from the system—whether disconnected or disabled in BIOS—I should first attempt the "Repair My Computer" option during a Windows install media boot. If that fails, I would then try the command line methods for BCDedit or BOOTREC. This guide clarifies the process better than I can. I understand you've already tried some of these steps, but without multiple boot drives, these tools might resolve the issue. Of course, this is just my rough guess. Your suggestions, thoughts, and actions are all useful for learning. Stay updated on what works and what doesn't! If everything else fails, I have a hammer and know how to use it!
I had already done that before, and the D drive was the only one connected. The C drive wasn't attached at that time.