XPS 8930, how to change boot order?

if the 2TB ssd has an exact image (which contains uefi partition and boot path file) as the old 500mb ssd, you simply uninstall the ssd, and pc should boot from the 2tb ssd.  no F12.

@redxps630​ 

…but I want to replace the 500gb 870 with another 1tb 870 for data storage, will it be ok without changing boot order? 

first make sure the new 2 TB ssd boots fine without glitch.  once you have a stable boot drive you can add whatever additional data drives you like.  do not play with boot order for it would only make you confused.  simple is easier.

@hpfish10 Your Dell uses Windows Boot Manager and has a UEFI BIOS so you cannot change the boot order. Instead after cloning your 870 with Samsung Data Migration, you should disconnect the 870 before booting the 970. Your system may boot from the 970 with both drives installed but it will be difficult but not impossible to tell which drive you are booting from. In cloning with Data Migration, you will lose all data on the 970 so you need to back it up first. The alternative to removing the 870 is to boot with F12 and select the boot drive you want, but you need to do this every time you boot to make sure you are booting from the drive you want.

     Once you are happy with the 970 as the boot drive, you can connect the 870, boot with F12 to the 970, and reinitialize the 870 to use as additional storage. To reinitialize the 870 use DiskPart and the following procedure: https://macrorit.com/partition-magic-manager/initialize-disk-gpt-mbr-from-cmd-diskpart.html

Make sure you use the List Disk command to identify the drives and the Select Disk command to reinitialize the correct drive.

     In the FAQ of the Samsung Data Migration manual is a warning about not supporting RAID. I think this is referring to RAID storage pool which your drives are not part of and not referring to the setting in the BIOS for SATA Operation which may be set to RAID. Samsung prefers SATA Operation in the BIOS to be set to AHCI. You can switch Windows from RAID to AHCI using this procedure: https://triplescomputers.com/blog/uncategorized/solution-switch-windows-10-from-raidide-to-ahci-operation/

If Samsung Data Migration works and to be safe and preserve the 870 as a backup in case something goes wrong I would wait to run the RAID to AHCI procedure on the clone drive.