XPS 27 one 2720 - replace 32GB mSATA for 250GB mSATA

See here to download Windows 8.1 media:

http://dellwindowsreinstallationguide.com/download-microsoft-windows-and-office/download-microsoft-windows/download-windows-8-1-retail-and-oem-iso/

You need to verify the edition by right clicking the start button and selecting System.

Before installation, ensure to change the SATA operation so you install Windows on the mSATA drive directly and do not use it as a cache drive:

http://dellwindowsreinstallationguide.com/ensure-you-have-the-correct-sata-configuration-in-the-bios-setup-for-your-configuration/sata-operation/

After installation you may wish to remap the user directories from the SSD to the HDD:

http://dellwindowsreinstallationguide.com/hardware-upgrades-for-your-system/upgrading-to-a-solid-state-drive/solid-state-drive-and-hard-drive-configuration/

More details are given in my "A Clean Install of Windows 8.1" guide:

http://dellwindowsreinstallationguide.com/a-clean-install-of-windows/a-clean-install-of-windows-8-1/

Oke! It's Thursday now and I am glad to inform that it works. I will write a quick guide how I did it, I will use some of Philips links for a longer description.

Download/ Setup BIOS

• Step 1: I bought the 250 Samsung mSATA drive (obviously)

• Step 2: I checked my Windows version (right mouse on windows icon > system)
• Step 3: I download RW-everything to "secure" my Windows 8 serial.
• Step 4: Run RW everything > Access > ACPI Tables > MSDN. You find your serial in front of data.

More info for step 2, 3 and 4 go to http://dellwindowsreinstallationguide.com/download-microsoft-windows-and-office/download-microsoft-windows/download-windows-8-1-retail-and-oem-iso/

• Step 5: I downloaded Windows 8.1 install disc (took me like 2/ 3 hours for some reason) You can find it here: http://windows.microsoft.com/en-us/windows-8/create-reset-refresh-media
• Step 6: I created an .ISO file
• Step 7: I used Rufus to create a bootable USB (so i can install my windows on my new SSD) You can find rufus here: https://rufus.akeo.ie/
• Step 8: Reboot PC into BIOS and change SATA mode to AHCI (i spammed, DEL + F2 when the PC boots since i was to lazy to search for the right button)

• Step 9: Change boot to USB device (i forgot to take a picture, but you can find it easily in your BIOS)
• Step 10: Save and Quit (F10)

Take apart the PC to replace the mSATA 32GB with mSATA 250GB

• Step 1: Unscrew the back (screws at bottom, NOTE don't take the screws out of the hole)

• Step 2: Unscrew the stand (6 screws)

• Step 3: Unscrew the right part (the big metal plate, yes)
• Step 4: Locate the mSATA

• Step 5: Remove the mSATA (unscrew it)

• Step 6: Put the new mSATA back in place like this:

• Step 7: Give little pressure so you can attach the screws
• Step 8: Put everything back and power it
• Step 9: Install Windows via the USB bootable
• Step 10: Windows was activated automatically no serial input was needed

I hope this helps. Thanks to Philip for the most of the tutorials. The only part i didn't follow was the "remap the user directory". Because at the setup i "deleted the hard drives" and i only added the mSATA drive so Windows could only be installed on my mSATA. After Windows was installed i add the other drive via Computer > Right mouse > Manage > Storage > Disks > Right mouse on the 2TB drive and add new volume.


Let me know if you need help!