As Paolo is clearly telling you; you need to do a fresh install onto the mSATA drive.
Your recovery disk is used to "recover" your computer to it's default configuration. I am guessing that means you cannot use it to install to the mSATA drive. But the crucial doco is saying its possible. Answer is to try it and find out. With a safety net.
1. Create a recovery OS disk/usb drive from your existing OS. (Ensure this worked correctly) Make sure you know what your Windows License Key is. Have it written down manually. I have it written in Marker on my install media.
1B. Backup all your data, personal stuff and config to a USB HD. Consider using the windows migration utility tp do this if you are not sure where it all is.
2. Shutdown and disconnect your 2710
3. Following the Operations Manual remove the back cover and MB shield. (assuming you are experienced in computer maintenance)
4. Install the mSATA drive in the mSATA slot as advised in the Ops Manual. Secure it with appropriate screws(Not supplied).
(BTW:The Mini PCI-e slot is not for SATA/mSATA drives in the same way that a power socket is not for forks.)
5. Disconnect your existing SATA drives data plug. (To stop any confusion and give you a safety net option) :)
6. Reassemble as per Ops Manual.
7. Boot and go into BIOS. Ensure the mSATA device is detected and available. Make sure you can Boot from your chosen OS install media. Be it USB or CD or DVD. (If you don't know how to do this consult the BIOS manual. Or consider getting someone who knows how to do this step help you out.)
8. Insert your Install media.
9. Reboot your PC. Choose to boot from the device where your install media is loaded: CD/DVD or your USB. Depending on the BIOS setting this may occur by default or may require you to press a key within a time period.
10. During the install process Install/Recover your OS to your mSATA drive. Put in your Windows License Key / Activation code when/if requested. You did write this down yeah?
11. When the fresh OS install is complete install the required updates and security patches and Dell utilities/drivers. Ensure you are happy with your new install.
12. Shutdown. Wait 10 seconds. Turn Back on. Go into Windows and ensure you are happy with your new OS.
13. Shutdown, disconnect, open the unit up again and re-connect your original SATA drive. Replace the shield and cover and re-boot.
14. Your old drive should now appear as drive d:. If it doesn't go into disk manager and trouble shoot a missing drive.
15. You can now remove the /windows directory off your d:\ drive as you have a new windows directory on your new c: drive.
16. Follow internet instructions on how to move you libraries onto you d:\ drive.
17. Depending on your mSATA drive size you can now use it for both OS and application installs while keeping your data on your old brown spinning disk. d: drive.
These instructions are actually quite generic for any computer system moving to a new SSD OS drive.
If things go haywire at any stage. Open the machine up, remove your mSATA, reconnect you old drive, reassemble and reboot. All will be back to normal. You didn't blindly change BIOS settings did you? Ohh No.
If you cant install to mSATA from your recovery media contact Dell to obtain a legal copy of Windows install media which they are required to supply you. But not necessarily for free.
PS: I have not tried these instructions on a 2710. But I am highly confident they will work. No guarantees are given or implied. Open your machine at your own risk.