Nimble Commander forum

When copying large bundles (especially apps) from a DMG to the main volume, NC (even on fast modern Macs) often takes a long time (several looong minutes) to verify if the copy process was successful. I assume that NC is using a hashing algorithm and compares source & destination file hashes.

I would strong advise switching to BLAKE3: https://github.com/BLAKE3-team/BLAKE3 … afaik this is the fastest algorithm available at the moment. It's actually insane how fast the b3sum CLI implementation already is. Moreover, to increase speed further by a couple of milliseconds per file, you can also set the length to 4 (à la CRC-32).

This process is I/O bound, so changing a hashing algorithm is unlikely do much.
CPUs are insanely fast these days comparing to peripherals.

Would the fact that some DMGs are super-compressed play into this? E.g. an app expanded & installed would be around 800 MB, and the DMG is only 250 MB. (But once mounted, it should imho be available for read access like any other directory.)

I'm not sure how compression could affect the verification process...