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Getting lots of hash check failed errors with this disc. Read all the posts that said my drive was going bad... so I bought a new drive. Same errors

I would be suspicious of the disk before the drive. If a drive is failing, it would start having similar errors on multiple disks; the same errors showing up for ONE disk and not others usually implies the disk is damaged.

Please turn on debug logging, which should show more information. You might also try the "Open/save to MKV" method, to see what errors appear.

I tested out AnyDVD, which also failed. Then I tried MakeMKV again so I could get the debug logs... and it worked. Probably something weird with my setup.

Anyone able to help interpret this? I understand that the Scsi Error lines are probably dirty disk, but the disc looks fine to the naked eye. I'm more curious about the debug codes. In the end, this encode fails no matter how I try it in MakeMKV.

Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
Title #00082.mpls has length of 12 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00800.mpls was added as title #0
File 00003.mpls was added as title #1
File 00451.mpls was added as title #2
Title 00700.mpls is equal to title 00451.mpls and was skipped
File 00805.mpls was added as title #3
Title #00002.m2ts has length of 11 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00007.m2ts has length of 116 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00008.m2ts has length of 22 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00009.m2ts was added as title #4
Title #00011.m2ts has length of 21 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00013.m2ts has length of 38 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00022.m2ts has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00023.m2ts has length of 15 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00024.m2ts has length of 12 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00025.m2ts has length of 12 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00277.m2ts has length of 8 seconds which is less than minimum title length of 120 seconds and was therefore skipped
File 00278.m2ts was added as title #5
File 00279.m2ts was added as title #6
File 00280.m2ts was added as title #7
File 00281.m2ts was added as title #8
File 00282.m2ts was added as title #9
File 00283.m2ts was added as title #10
File 00284.m2ts was added as title #11
File 00285.m2ts was added as title #12
File 00286.m2ts was added as title #13
File 00287.m2ts was added as title #14
File 00288.m2ts was added as title #15
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00289.m2ts' at offset '61440'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00289.m2ts' at offset '61440'
DEBUG: Code 0 at VL'VrJz@G6>mQN0z#s9":121263038
DEBUG: Code 0 at !5#0q]?KmM3*0rA RPM):121262302
DEBUG: Code 0 at VL'VrJz@G6>mQN0z#s9":213130559
DEBUG: Code 30 at VL'VrJz@G6>mQN0z#s9":29393286
DEBUG: Code 0 at Qg}hc%Ll08wd).t+;%6k:213139253
DEBUG: Code 0 at 77$Ag%oa<kB\J5vj\::121262049
DEBUG: Code 0 at 77$Ag%oa<kB\J5vj\::121262256
Failed to decode audio/video data for title #16 - invalid mux or internal error, title skipped.
DEBUG: Code 0 at X4]*B!hoT<:20#l-:121263314
DEBUG: Code 0 at ;4BDjG5LkRvLRv1:121270927
DEBUG: Code 0 at 'V%sU:vm4=.PZ3z3:213114206
Title #00289.m2ts was skipped
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00290.m2ts' at offset '0'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00290.m2ts' at offset '0'
DEBUG: Code 0 at 77$Ag%oa<kB\J5vj\::29393677
DEBUG: Code 0 at X4]*B!hoT<:20#l-:121263314
DEBUG: Code 0 at ;4BDjG5LkRvLRv1:121270927
DEBUG: Code 0 at 'V%sU:vm4=.PZ3z3:213114206
Title #00290.m2ts was skipped
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00291.m2ts' at offset '0'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00291.m2ts' at offset '0'
DEBUG: Code 0 at 77$Ag%oa<kB\J5vj\::29393677
DEBUG: Code 0 at X4]*B!hoT<:20#l-:121263314
DEBUG: Code 0 at ;4BDjG5LkRvLRv1:121270927
DEBUG: Code 0 at 'V%sU:vm4=.PZ3z3:213114206
Title #00291.m2ts was skipped
Title #00292.m2ts has length of 102 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00272.m2ts has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00273.m2ts has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00274.m2ts has length of 10 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Title #00275.m2ts has length of 0 seconds which is less than minimum title length of 120 seconds and was therefore skipped
Operation successfully completed
Saving 1 titles into directory /Users/.../.../movies
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2640052224'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2640181248'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2640181248'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2640377856'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2641035264'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2642079744'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2642276352'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2642276352'
Error 'Scsi error - MEDIUM ERROR:L-EC UNCORRECTABLE ERROR' occurred while reading '/BDMV/STREAM/00276.m2ts' at offset '2642282496'
DEBUG: Code 0 at VL'VrJz@G6>mQN0z#s9":121263038
DEBUG: Code 0 at !5#0q]?KmM3*0rA RPM):121262302
DEBUG: Code 0 at VL'VrJz@G6>mQN0z#s9":213130559
DEBUG: Code 1290177 at VL'VrJz@G6>mQN0z#s9":29393286
DEBUG: Code 0 at "Bi_IjpT/Uy'`]]QUTb5i:29398967
DEBUG: Code 0 at "Bi_IjpT/Uy'`]]QUTb5i:29398967
DEBUG: Code 0 at "Bi_IjpT/Uy'`]]QUTb5i:29398967
LIBMKV_TRACE: Exception: Error while reading input
Failed to save title 0 to file /Users/.../.../Ex_Machina_t00.mkv
0 titles saved, 1 failed

Starman, debug messages result from MakeMKV trying different things to work around invalid data being received. MakeMKV tries to fix it up; if it can, it moves on. If it can't, it will try different things until it either runs out of things to try or gets a valid error response from the drive. Each thing that is tried is documented with a debug code, so that Mike can analyze what is going on.

Mike has said that some drives are returning "mostly correct" data when they hit some types of read errors, but "mostly correct" is still wrong. Your log shows read errors while accessing the directory information, and later when it tries to read the data track. It is POSSIBLE that increasing the retry count could help (Preferences->IO menu), but I would not hold out a lot of hope for that.

Thanks, much obliged!