I mistakenly selected save original files upon conversion to DNG and selected my whole catalog. Now I have a DNG and CR2/xmp of the same image. In order to recover storage space, I have been manually deleting CR2/xmp files and preserving the DNG file. Any way to do this more efficiently?
Easy-peasy. Go to Library mode, Grid View, and on the top you'll see:
[Note: if you do not see all of this in Grid view, click the arrow on top]
Set the item you're looking for for "Text" (just under the red box above). Then for Text in the options in the lighter grey set that to "Filename," Set the next dropedown to "Contains." Lastly, for the last field, enter "CR2" and tap your Return/Enter key Now you can select all and delete away.
As far as the xmp files, I "pretty sure" those files will be deleted with the CR2 files. However, to verify, click on one of the DNG files that remain, right-click, and select "Show in Finder/Explorer" Since these are in the same folder, if there are any XMP files remaining, you can manually delete them.
When you 'convert' original raw files in the Catalog to DNG- It is the DNG version that becomes the image referenced in the Catalog, and the original raws (if preserved) no longer show, or are referenced, in the Catalog! So a Text search in Lightroom will not find the original raws.
Any 'Delete' step would need to be in the File Browser of the OS.
So unless we see other suggestions- it may be necessary to look in folders with the File Browser (Finder / File Explorer) and manually select all raw originals to 'delete' leaving the DNGs in place.
Any 'orphaned' raws (never imported to the Catalog) would be a problem (if deleted) as there is no DNG converted for these!
Yeah if you forgot to select "delete originals after succesful conversion" you end up with the raw originals and xmp if you had writing to xmp turned on strewed all over your hard disk. There is now no reference in Lightroom Classic to these files anymore so no way to find them again. The only thing you can do when this happened is use a commandline tool or Finder/explorer search to find them and delete them. An Alternative would be to synchronize the folders again so as to reimport all the orginal raw files and then delete them in Lihgtroom using the search proposed by Gary.