I´m trying to discard my 1:1 previews in order to reduce the size of my 173gb lrdata.
However this doesn´t work. The process breaks and never move forward even if i give the computer several hours to do so.
Process bar stucks in the middle and will not move forward at all.
This was a known problem in a previous version, and was supposedly fixed (I confirmed that it was fixed), but I tried it recently too and it's broken again. I was feeling disheartened at the time and did not bother to file a bug report, but if you want to:
If you really need to discard 1:1 previews of selected photos, you can do so using PreviewExporter's "Discard Lib Previews" function (free plugin I wrote), but note: it discards standard previews too, but you can rebuild them. You probably already know this, but if you want to discard all 1:1 previews, trash the entire preview folder (.lrdata) and rebuild standard previews. (I realize you'd rather not have to take the time to rebuild standard previews, but that's the best I can offer..).