Yeah, you need to copy most things from your Vita memory card to your SD2Vita so the console loads the games/homebrew you have there. That is mentioned in the guide when you setup your SD card for Storagemgr.
Most things on your sony memory card can be deleted now, like games. You just need to leave the folders of Vitashell, the exploit used (H-encore or Trinity) and the others the guide mentions. This is just to be on the safe side like I mentioned in my previous post. That way, if your SD2Vita doesn't load for some reason, Vitashell and any exploits you may have will still be available on your Sony memory card. The worst thing that will happen at that point is that the app.db needs to be rebuild and your bubbles layout will be reset, which isn't so bad.
I guess I overlooked the part about copying from vita mc to sd2vita. I actually do not have anything other than the homebrews from the henkaku/adrenaline/etc tutorial since did a totally fresh start, while we're at it, what could the um0(my 16gb sony mc) be used for now? I mean other than for the safeguard methods you mentioned above with h-encore, etc because it is still pretty much mostly empty after all since the homewbrews size are very small. Since those homebrews barely used any space, I decided to not delete anything from uma0 for the safeguard method you mentioned if somehow my sd2vita became problematic.
Glad you got it solved. What a difference between the 16G and 200GB. Sony shouldn't have never capped the storage, that's asking for shit like this. I may buy 200GB or 256GB microsd to carry all the content such as the games and videos. 64GB Sony mc is almost full too :/
Yeah, totally big differences here! It is MUCH cheaper too! sony mc is ridiculously priced, that's why I'm still using my 16gb as the 32gb or 64gb are very expensive..200 GB is pretty much enough for my needs(vita/psp/psx games). So yeah, buy the 200/256gb you totally wont regret it!