It's not really an issue if you're simply updating the application itself without moving the blocks, migrating to a new PC and/or you still have a decent amount of storage space available.
I just did this just now (upgraded to 0.21.0) and had no issues with it whatsoever... it didn't "auto prune" my blocks or change any of the settings.
I have noticed however, that if I run the
-choosedatadir option and set it to use
the current location of my bitcoin datadir, because the current diskspace free is less than the current blockchain size (ie. 350+gigs), it auto-enables the pruning option:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2FzsWAD.png&t=663&c=8wbKVfHb-RF3RQ)
Even though it doesn't need to actually download anything, because the blocks are already there...
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
So, I assume for anyone that copies the datadir
first and then runs Bitcoin Core... it will do the same thing, unless there is >350gigs free space etc.
If I untick pruning, it then "warns" about the disk free space in red:
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2FzseIf.png&t=663&c=LA1-Zz5gkay6KQ)