There was a question on iFixit about how to set up the OS/drivers after upgrading the storage on the Surface Studio.
Unfortunately, my answer keep getting deleted, so I’ll post it here.
Follow the teardown to upgrade the storage drives: https://www.ifixit.com/Teardown/Microsoft+Surface+Studio+Teardown/74448
Download the recovery image for Microsoft Surface from Microsoft’s website
https://www.microsoft.com/surface/en-us/support/warranty-service-and-recovery/downloadablerecoveryimage
Format your flash drive in FAT32 format and extract the content of the zipped file to the flash drive.
Step 1: Shut down your Surface.
Step 2: Insert the bootable USB drive into the USB port on your Surface.
Step 3: Press and hold the volume-down button on Surface.
Step 4: While holding down the volume-down button, press and release the power button.
Step 5: Follow the on-screen instructions to boot from your USB drive.
English (United States) > US > Troubleshoot > Reset your PC > Next > Yes, repartition the drives > Just remove my files > Next