This is just an FYI. I have an army of 650G1's and 640G1's that I use at home and work. God bless these fantastic machines!!. Everyone in my house has one. They are abundant at work, and at my friends houses too. Even though they are older dual core machines, they are very viable as long as you aren't playing crazy video games. HP engineers did a fine job with this laptop.
I had always wanted to try an M.2 drive in one of these. My work laptop does not have an LTE card, so it had an open slot. I work with multiple versions of diagnostic software for engines and heavy equipment. The various versions cannot co-exist on the same operating system. I thought it would be nice to have everything on one laptop. In the past I have used several computers to fit my needs until I discovered the beauty of using UEFI. Still, I wanted to try using multiple disks instead of separate partitions.
I bought an inexpensive Transcend 256GB SATA III 6Gb/s MTS430S 42mm M.2 SSD. It works well, but it has a tendency to run hot when it is being worked hard. I saw temperatures above 80C when running crystaldiskmark. It does a fine job, and gave my 2.5" 860EVO SSD a run for it's money. It is very fast, and the OS boots very quickly.
I wanted to install Windows 10 on the M.2, and be able to boot from it, as well as being able to boot from my existing 2.5 ssd using the dual boot feature in Windows. I found that I could not do this, and believe me I tried evert setting possible in BIOS.
I searched the forums here, and there were no answers to my problem.
My solution was EasyBCD 2.4. It is a free program, and a very easy install.
Whenever I restart, or power up my machine, it gives me a choice of which OS I want to run. I renamed the different OS drives with .cmd, and it is easy to distinguish them. I am going to try putting an SSD into the DVD slot next and see if I can add another bootable drive using Easy BCD. I do not think that it will be a problem.
I hope this helps someone. Long live the G1 probook.
My laptop is set to boot from UEFI. I prefer it over MBR (legacy bios).
Be alert for scammers posting fake support phone numbers and/or email addresses on the community. If you think you have received a fake HP Support message, please report it to us by clicking on "Flag Post".