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Is that drive powered via USB? Does it have two USB connectors and are they both connected either to the computer or two a powered USB hub? Great call! That was the problem! (Or at least, -a- problem. I'd suspected power might be an issue, but I never thought it would manifest itself with those kin...

does the ole DVDShrink application still work? I'm on a Mac, so it's not available to me. (I have access to a Windows PC, so maybe I will give it a try if I get the chance.) Part of me thinks it's unlikely that a 15-year-old app would more likely work than apps updated in 2021... but you never know...

I should mention I can't get Handbrake (with libdvdcss installed) to rip this successfully, either.

Tried again and got more messages: MakeMKV v1.16.5 darwin(arm64-release) started Optical drive "BD-RE MATSHITA BD-MLT UJ240ES 1.21 HK18 105982d" opened in OS access mode. Using direct disc access mode Error 'OS error - (ipc/send) invalid destination port' occurred while reading '/VIDEO_TS/...

Brand-new DVD that plays fine on a DVD player, and in the DVD player app. But when I run MakeMKV 1.16.5, I get the following errors when I try to open the disc: MakeMKV v1.16.5 darwin(arm64-release) started Optical drive "BD-RE MATSHITA BD-MLT UJ240ES 1.21 HK18 105982d" opened in OS access...