Problem description: After adding a new hard disk and making sure that the hard disk is not damaged, the new hard disk cannot be recognized.
solution:
1. Check whether the safe mode in the bios system is turned on. Because in versions above Windows 8.1, only a single hard disk can be read without turning it on. (If you can see the information of the inserted hard disk in the bios interface, you can confirm that the hard disk is normal).
2. In the case of the first step, it is still unable to enter the system, or the device cannot be recognized. Enter the pe mode, open the partition tool DiskGenius to judge, check the file format of the two hard disks, and the hard disk format.
Hard disk format - under normal circumstances, the hard disk partition table hard disk format less than 2T, cut the system version you installed to win8 or later, usually set to GUID. On the contrary, it is MBR mode.
3. Merge all new hard disk partitions to create ESP partition and MSR partition
After the build is complete, install the system you need on the SSD. The hard disk will be recognized when it is powered on normally.