How To Make Ssd Primary Drive Windows 10. Author's note: BIOS will look different depending on your motherboard's manufacturer. You can also install a fresh version of Windows on the new SSD, make that the primary boot drive (via your motherboard's BIOS), and use your older hard drive as secondary storage for your less-critical files.
The idea is to make the external SSD the primary drive.
After confirming these changes, connect your external hard disk, then power on the device.
If it detects your drive as an SSD, instead of defragmenting the drive, it will optimize it for the TRIM command, which improves the performance. You can also install a fresh version of Windows on the new SSD, make that the primary boot drive (via your motherboard's BIOS), and use your older hard drive as secondary storage for your less-critical files. I mean how to change system disk and set SSD as the system drive?