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r/makemkv • … • u/Dented_Steelbook

Weird issue involving Pacific Rim (Titans of Cult)

Mac OS 15.7.7

MakeMKV v1.18.2 \[darwin (x64-release)\]

Hitachi/LG drives flashed 1.02

I tried to do a full decrypted backup of the UHD disc, loaded fine, recognized the disc, started decrypting, about 12 minutes in, it showed two errors:

Error 'OS error - (ipc/?) unknown subsystem error' occurred while issuing SCSI command 4602010D0..010 to device 'IoKit:/IOBDServices/EC639F92'

Can't read AACS VID from disc - most likely current AACS host certificate is revoked by your drive

I tried to eject the disc, I waited for a few minutes, then pushed the eject button, took minutes to finally eject. For giggles I tried to reinsert the disc in the same drive, now it spins for a minute or so, shows as no disc, then ejects it. At this point the drive won't recognize any disc, UHD, Blu Ray, or DVD. I can power the drives down, shut down MakeMKV, restart the drive, restart MakeMKV and things work normally again (without restarting computer).

I tired it in my second LG driven it did the exact same thing to it. I restarted everything, again, then tried the same disc in my Pioneer drive and it not only Decrypts, but makes the backup. I have not finished to see if there is any failure, but I really would like to know what this disc is doing to my LG drives???

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