HK download never finishes on Mac Studio

[kfreeb]

I have a new Mac Studio M3 Ultra, running Sequoia.
I can rip 1080p blu-rays just fine, but most 4K discs time out during the HK download. It seems the drive just stops spinning at this point) I have had one 4K disc get past the HK download phase, (after a long wait.)

I’m using ASUS an LG 4K drives.

I have two other older Macs that are running the older Mojave OS, using the same external drive, Make MKV has no issues ripping the same 4K disc’s, on these Macs, (they never hang downloading the HK file.

Anyone know if there is an issue ripping 4K discs on the Mac Studio M3 Ultra?

[dcoke22]

I have an older Mac Studio, not an M3 Ultra, and it downloads HKs just fine. I'm running Tahoe (macOS 26) on it, not Sequoia (macOS 15). I have other Apple Silicon Macs on Sequoia that work fine as well.

The downloaded HKs end up in the _private_data.tar file in whatever folder is configured in MakeMKV's preferences as the MakeMKV data directory. By default it is ~/Library/MakeMKV. Does MakeMKV have permissions to write to that folder?

[kfreeb]

Yes, it does, like I said I can rip Blu-rays, no issue, so MKV has full right permission. It doesn’t matter what drive I try to rip to, being these are external drives, 4K just will not allow the HK file to finish downloading.
That being said, I did have one 4K disc after a long wait finish the HK download and then begin ripping to the drive that I had selected. I just don’t understand what’s causing the difference between ripping Blu-rays, which work and 4K’s, which do not due to the HK file not downloading or completing the download.

[kfreeb]

One additional note, the drive is connected via USB–C cable, plugged into a thunderbolt 5 port.

[kfreeb]

One additional note, the drive is connected via USB–C cable, plugged into a thunderbolt 5 port.