I guess you were referring to my post... You have to do a couple of things to install a new SSD, and in the correct order: a. Open Cmd prompt window, Run as administrator b. Copy-paste this command, which will start Windows in Safe Mode the next time you reboot: bcdedit /set {current} safeboot minimal and press Enter c. Restart the computer and tap F2 to enter BIOS setup d. Change SATA Operation mode from RAID to AHCI e. Save the change and exit Setup. Windows will automatically boot in Safe Mode. f. Open Cmd prompt window again, as in a, above g. Copy-paste this command, which will start Windows in Normal Mode the next time you reboot: bcdedit /deletevalue {current} safeboot and press Enter h. Reboot and Windows will automatically start with AHCI drivers enabled 4. Image all partitions on the boot HDD and save the image on an external USB drive 5. Use same imaging software to create a separate bootable USB stick 6. Remove old boot HDD and 32-GB mSATA SSD 7. Install new mSATA or SATA SSD 8. Restore the image onto new drive. NOTES: If the new mSATA or SATA SSD has different storage capacity than the existing HDD, you will have to resize the partitions when you move your image onto the new SSD. Eg, If you install a 512 GB mSATA SSD to replace the 2T HDD, you'll have to make the C: partition smaller. Otherwise, the image won't fit.  Exactly how you do that depends on the software you use to image the HDD. So be sure to understand that process before you dive in. Be sure to create and test that bootable USB stick (#5) because you'll need it to boot the PC after installing the empty, new SSD so you can move your saved image onto that new SSD (resizing the C: partition, as necessary).
I have 2 Dell XPS One 2720 all in 1 computers. One of them is now experiencing a hard drive failure and I am planning on upgrading the drive systems on it. It has the 32 GB mSATA drive and the 2 TB HDD. The HDD is failing. At the same time I want to install a larger mSATA drive, but I see only that a maximum  256GB is mentioned. But, now there are 1 TB mSATA drives as well. What prevents a larger than 265GB drive from being installed?  Is it a BIOS issue? If so, what can be done to improve that 256 GB limit to 1 TB without adding partitions (i.e. I want the entire 1TB to be used for OS and related software, just want the different software apps installed with any resulting data to be on the HDD replacement SSD)?  And can I use a newer 3D NAND versions for increased speeds as well? If so does it require any BIOS changes to make that happen or?  If successful in my ambitions, lol, I will also repeat this on the second dell unit as well.  thanks larry80
XPS One 2720, mSATA drive upgrade to larger