http://redump.org/disc/81840/

Common Disc Info:
    Title: Descent to Undermountain
    Foreign Title (Non-latin): 
    Disc Number / Letter: 
    Disc Title: 
    System: IBM PC compatible
    Media Type: CD-ROM
    Category: Games
    Fully Matching ID: 81840
    Region: USA
    Languages: English
    Disc Serial: CD-ICD-189-0

    Ringcode Information:

Data Side Mastering Code (laser branded/etched): FM 12919 (CD-ICD-189-0/IN0002)
Data Side Mastering SID Code: IFPI LG31
Data Side Toolstamp or Mastering Code (engraved/stamped): 
Data Side Mould SID Code: IFPI 3V10
Data Side Additional Mould: 
Label Side Mould SID Code: 
Write Offset: -12

    Barcode: 0 40421 13189 1
    Error Count: 0
    Comments:

[T:VOL] DTU
[T:ISBN] 1-57629-012-3

    Contents:

<b>Applications</b>: Adobe Acrobat Reader (DOS and Windows)
BootMe boot disc creator
[T:V]
ENGAGE Games Online trailer
[T:X]
PDF Manual

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 31 39 39                199
0330 : 37 31 32 30 38 30 34 32  33 34 30 00 00 04 31 39   71208042340...19
0340 : 39 37 31 32 30 38 30 34  32 33 34 30 00 00 04 32   971208042340...2
0350 : 39 39 37 31 32 30 38 30  34 32 33 33 39 00 00 04   9971208042339...
0360 : 31 39 39 37 31 32 30 38  30 34 32 33 33 39 00 00   19971208042339..
0370 : 04 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................

Tracks and Write Offsets:
    DAT:

<rom name="DTU.bin" size="540696576" crc="c9525716" md5="d7cd1151b922e1c37b1b80d0914b78cf" sha1="1411644cc9322d0a52af8f9ae7cff5cdb4952ac4" />

    Cuesheet:

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

    Write Offset: -12

Dumping Info:
    Frontend Version: 3.3.1-14c17bbdf727b90d6268f287c31cd6ec76d9349f
    Dumping Program: Redumper v2025.05.21 build_585
    Date: 2025-05-23 20:12:10
    Parameters: disc --verbose --skeleton --drive=F:\ --speed=24 --retries=20 --image-path=ISO\DTU --image-name=DTU
    Manufacturer: PLEXTOR
    Model: DVDR PX-755A
    Firmware: 1.08 (08/18/07 15:10)
    Reported Disc Type: CD-ROM
    C2 Error Count: 0

http://redump.org/disc/64016/

Common Disc Info:
    Title: Descent: FreeSpace: Silent Threat
    Foreign Title (Non-latin): 
    Disc Number / Letter: 
    Disc Title: 
    System: IBM PC compatible
    Media Type: CD-ROM
    Category: Add-Ons
    Fully Matching ID: 64016
    Region: USA
    Languages: English
    Disc Serial: CD-C95-891-0

    Ringcode Information:

Data Side Mastering Code (laser branded/etched): CDC958910 R1F
Data Side Mastering SID Code: IFPI L240
Data Side Toolstamp or Mastering Code (engraved/stamped): 12
Data Side Mould SID Code: IFPI4121
Data Side Additional Mould: 
Label Side Mould SID Code: 
Write Offset: -12

    Barcode: 0 40421 00241 2
    Error Count: 0
    Comments:

[T:VOL] STHREAT
[T:ISBN] 1-57629-392-0

    Contents:

<b>Applications</b>: MindSpring ISP software
[T:PD]
M.A.X. 2
[T:RD]
Heart of Darkness
Star Trek: Secret of Vulcan Fury

Version and Editions:
    Version: 1.04
    Edition/Release: Original

Extras:
    Primary Volume Descriptor (PVD):

0320 : 20 20 20 20 20 20 20 20  20 20 20 20 20 31 39 39                199
0330 : 38 30 39 32 31 31 32 30  30 30 30 30 30 00 31 39   8092112000000.19
0340 : 39 38 30 39 32 31 31 32  30 30 30 30 30 30 00 32   98092112000000.2
0350 : 30 30 38 30 39 31 38 31  32 30 30 30 30 30 30 00   008091812000000.
0360 : 31 39 39 38 30 39 32 31  31 32 30 30 30 30 30 30   1998092112000000
0370 : 00 01 00 00 00 00 00 00  00 00 00 00 00 00 00 00   ................

Tracks and Write Offsets:
    DAT:

<rom name="STHREAT.bin" size="333231360" crc="f3703e09" md5="e2158cd6d879f2be9c812ad90aa4c1fd" sha1="ab19de69f04206d24abd5d82f2f57208c8f94484" />

    Cuesheet:

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

    Write Offset: -12

Dumping Info:
    Frontend Version: 3.3.0-679b40de7c089c3705ef008fbb720f6a4eabc6f1
    Dumping Program: Redumper Unknown Version
    Date: 2025-05-22 19:07:18
    Parameters: cd skeleton --verbose --drive=F:\ --speed=24 --retries=20 --image-path=ISO\STHREAT --image-name=STHREAT
    Manufacturer: PLEXTOR
    Model: DVDR PX-755A
    Firmware: 1.08 (08/18/07 15:10)
    Reported Disc Type: CD-ROM
    C2 Error Count: 0

It worked. Thanks!