what type of ssd I can use in HP Prodesk 400 G1 DM

[JozefSk]

Hallo

 I have installed 256GB SSD and want to install aditional M.2 SSD 256GB. I want to boot from M.2 SSD. Should I buy NVMe SSD or SATA3?

Would it boot?

[old_geekster]

@JozefSk, welcome to the forum.

Here is the Maintenance and Service Guide for the computer.  In Chapter 4, Removal and replacement procedures, Page 19, there is a list of compatible SSD's.  You should be able to boot from the M.2 SSD if you disconnect the SSD that is installed.  You don't want two OS'es on the same computer.  Then, set the boot order for the M.2 SSD in the BIOS.

Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.

[JozefSk]

In the manual, there is only one M.2 SSD. 128GB.

That is too small. I want to transfer content of my old 256GB SSD to M.2 SSD (maybe with PartitionMagic), and use old SSD as data disk.

Can I use 256GB SSD M.2 PCIe?

[old_geekster]

@JozefSk, I believe that you can install a 256 GB M.2 SSD.  If you look at the Page 19 in the section that I mention in my first post there are 256 GB SSD's listed.