According to an email posted at Lawflog.com and sent to attorney Ty Clevenger, the attorney for the FBI now admits that the:
FBI has completed the initial search identifying approximately 50 cross-reference serials, with attachments totaling over 20,000 pages, in which Seth Rich is mentioned. FBI has also located leads that indicate additional potential records that require further searching. . . . FBI is also currently working on getting the files from Seth Rich’s personal laptop into a format to be reviewed. As you can imagine, there are thousands of files of many types. The goal right now is to describe, generally, the types of files/personal information contained in this computer.