If you merge the three versions of DataSet 9 that are found so far:

DataSet%209.zip : https://github.com/yung-megafone/Epstein-Files Data Set 9.tar.xz : https://archive.org/details/data-set-9.tar.xz dataset9-more-complete.tar.zst : https://github.com/yung-megafone/Epstein-Files

You will end up with 531,282 IMAGES files (PDF). You would think that there is a lot missing, however, the partially corrupted DataSet%209.zip gives us a DAT and OPT file to see what files remain.

The DAT file reveals there are only 531,307 IMAGES files (PDF) supposed to be in the archive. Which means only 25 PDF files are actually missing.

You'd notice that 25 PDF files couldn't possibly be the remaining 80-ish GB that remains of the original DataSet 9, but the DAT file doesn't reveal how many NATIVES there were.

NATIVES are media files like videos and audio. You can see an example if you have a full DataSet 10. But from DataSet 10 it reveals to us that all NATIVES have a placeholder as a PDF which is always 4670 bytes.

So by searching all files that are that exact size, it reveals there are about 135 NATIVES (media files) that are missing, which would be the rest of the 80 GB that is missing.

I have listed below what IMAGES (PDF) and NATIVES (media) files are missing, such that it is easy to coordinate to track down the remaining files that we need for a complete DataSet 9.

(Though the remaining PDFs could be placeholder for up to 25 more natives, which would have to be checked when finding them).

MISSING_EFTA_IMAGES:
EFTA00709804,EFTA00709805,EFTA00709806,EFTA00709807,EFTA00770595,EFTA00774768,EFTA00823190,EFTA00823191,EFTA00823192,EFTA00823221,EFTA00823319,EFTA00877475,EFTA00892252,EFTA00901740,EFTA00912980,EFTA00919433,EFTA00919434,EFTA00932520,EFTA00932521,EFTA00932522,EFTA00932523,EFTA00984666,EFTA00984668,EFTA01135215,EFTA01135708

MISSING_EFTA_NATIVES:
EFTA00068376,EFTA00072394,EFTA00072395,EFTA00072396,EFTA00072397,EFTA00072398,EFTA00072399,EFTA00072400,EFTA00072401,EFTA00083881,EFTA00089243,EFTA00090492,EFTA00093515,EFTA00093697,EFTA00096469,EFTA00104842,EFTA00135578,EFTA00143411,EFTA00143735,EFTA00151167,EFTA00151168,EFTA00151169,EFTA00152684,EFTA00152685,EFTA00152686,EFTA00152687,EFTA00152688,EFTA00152689,EFTA00152690,EFTA00152691,EFTA00152692,EFTA00155484,EFTA00155485,EFTA00155486,EFTA00155488,EFTA00155489,EFTA00155490,EFTA00155551,EFTA00157542,EFTA00159164,EFTA00165150,EFTA00179442,EFTA00179443,EFTA00179444,EFTA00179445,EFTA00179446,EFTA00182656,EFTA00182657,EFTA00184097,EFTA00184098,EFTA00221035,EFTA00221036,EFTA00221037,EFTA00221038,EFTA00221039,EFTA00221040,EFTA00221041,EFTA00221042,EFTA00221043,EFTA00221044,EFTA00221045,EFTA00221046,EFTA00221047,EFTA00221048,EFTA00221049,EFTA00221050,EFTA00221051,EFTA00221052,EFTA00221053,EFTA00221054,EFTA00221055,EFTA00221056,EFTA00221058,EFTA00221059,EFTA00239786,EFTA00239787,EFTA00241270,EFTA00276490,EFTA00277088,EFTA00277091,EFTA00277094,EFTA00277095,EFTA00277096,EFTA00277098,EFTA00279451,EFTA00279453,EFTA00759424,EFTA00776196,EFTA01140431,EFTA01140602,EFTA01141209,EFTA01141213,EFTA01144362,EFTA01144363,EFTA01144697,EFTA01145825,EFTA01147043,EFTA01149290,EFTA01149291,EFTA01173979,EFTA01177273,EFTA01177560,EFTA01177632,EFTA01181146,EFTA01182315,EFTA01184143,EFTA01190710,EFTA01192998,EFTA01193063,EFTA01194887,EFTA01195505,EFTA01196058,EFTA01196418,EFTA01196421,EFTA01196518,EFTA01196747,EFTA01196752,EFTA01196754,EFTA01196756,EFTA01196936,EFTA01197105,EFTA01197126,EFTA01197787,EFTA01197931,EFTA01198064,EFTA01198505,EFTA01204371,EFTA01205883,EFTA01206089,EFTA01250813,EFTA01250814,EFTA01250815,EFTA01250886,EFTA01250917,EFTA01250922