What to do after cloning old HDD to SSD

Yes. It should work with no problem. Set the boot drive to the external one in bios. Boot the computer and format internal one.

I'm in the same boat with a new ASUS E402SA. I just ordered an SSD. I assume once it's installed and formatted, the system eMMC "drive" can be cloned to the SSD. My only question was about setting the SSD to the boot device in the BIOS.

What did you do in the end: leave the eMMC alone, or nuke it? I was thinking leaving it alone would be a nice backup of the OS, etc. I'm also wondering about drive letter conflicts.

Thanks.

Sorry to hear about your troubles. Thanks for the quick reply.

I ordered an inexpensive Crucial SSD today, so we'll see how it goes. Like I said, I'm planning on not deleting anything from the eMMC "drive," but still force the UEFI "BIOS" to boot from the SSD once I've cloned everything. I've done a lot of reading about Secure Boot and CMS in the UEFI, so I'm hopeful I can set the SSD to the boot device. I sent ASUS support an email, but I'm not holding my breath for a meaningful reply.

If I'm successful, I'll post a followup.

I'll reply to myself. Long story short, got the SSD, cloned the eMMC several times using Partition Wizard and Macrium Reflect v6 (both free versions) - Acronis 2015 from Crucial promo couldn't even read the eMMC at the beginning of the clone process; LOL - tried to adjust partitions and just duplicating source drive, leaving huge amount of unallocated space on the SSD. I've messed around with diskpart and bcdedit, disabled Secure Boot, Fast Boot, even tried CSM mode in the UEFI firmware... can't get the SSD to boot. Tried EasyBCD, too, but it's hobbled by the UEFI firmware.

bcdedit seems to indicate the eMMC is the device the Boot Manager and Boot Loader are pointing to, and I lack the knowledge to edit the BCD (doing TONS of reading). At least Macrium's rescue environment has a Fix Boot Problems option that gets me back to booting from the eMMC when my mad scientist attempts fail. I was able to get diskpart to change the drive letters on the two "Windows" volumes, and both rescue environments (Partition Wizard and Macrium) show the SSD having the C: drive, the eMMC D:. But as I can only boot from the eMMC, once I'm in Windows 10, Disk Management shows the opposite, which makes sense.

Any ideas re: how to edit the BCD?

Did you ever find a way to resolve this? I am. In the same boat.

I have the same problem. Clone was successful, but as the eMMC card is build-in, I cannot disable it and Windows boots from it. I have added manual the the new system to the bootloader, but it does not boot. The boot from eMMC works fine.