Will rc4 "just" start mining "real" ZCash tomorrow?

Or do I have to rebuild? I’m very new to this…

you will probably have to rebuild, or at least re-run the fetch-params.sh. The testnet chain will be deleted and a new ‘real’ chain will start so you’ll need new addresses, etc. probably best to just restart from scratch

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Okay - thank you - greatly appreciate the help!

just to confirm, looks like you will need to make changes to zcash.conf, re-fetch params and rebuild, their 1.0 user guide is up:

update your local snapshot of our code:

git checkout v1.0.0
./zcutil/build.sh -j$(nproc)

When I did ./zcutil/fetch-params.sh all it did was instantly print back: Zcash - fetch-params.sh

I was expecting another long download. I was running rc4 last night. Should it have taken some time to download and printed back anything else? Did I already download the real parameters last night? It built fine and is running, but how do I know I have the right parameters? Would I get an error after compiling 1.0.0 if I had the wrong ones and ran zcashd?

git checkout v1.0.0
error: pathspec ‘v1.0.0’ did not match any file(s) known to git.

Same - anyone have a fix here?