Matches: http://redump.org/disc/23376/

Logs: https://cdn.discordapp.com/attachments/ … 930/DM2.7z

Common Disc Info:
    Title: 
    Foreign Title (Non-latin): 
    Disc Number / Letter: 
    Disc Title: 
    System: IBM PC Compatible
    Media Type: CD-ROM
    Category: Games
    Matching IDs: 23376
    Region: USA
    Languages: English
    Disc Serial: CD-ICD-046-0

    Ringcode Information:
        Data Side Mastering Code (laser branded/etched): 
        Data Side Mastering SID Code: 
        Data Side Toolstamp or Mastering Code (engraved/stamped): 
        Data Side Mould SID Code: 
        Data Side Additional Mould: 
        Label Side Mould SID Code: 
        Label Side Additional Mould: 
    Barcode: 0 40421 13046 7
    Error Count: 0
    Comments: 
    Contents: 

Version and Editions:
    Version: 1.0
    Edition/Release: Original

Extras:
    Primary Volume Descriptor (PVD):

0320 : 20 20 20 20 20 20 20 20  20 20 20 20 20 00 00 00                ...
0330 : 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................
0340 : 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................
0350 : 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................
0360 : 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................
0370 : 00 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................

Copy Protection:
    Copy Protection: None found

Tracks and Write Offsets:
    DAT:

<rom name="DM2.bin" size="35061264" crc="43376364" md5="bc5558a2310bc4d091fb5ee162b70c05" sha1="cf8e5de889d4aceb4dfefc715385bca4d62cee1d" />

    Cuesheet:

FILE "DM2.bin" BINARY
  TRACK 01 MODE1/2352
    INDEX 01 00:00:00

    Write Offset: -22

Can you provide the ringcodes?  Did they match the existing entry exactly?