Various html files used to be included in this directory but they were beginning to bloat the size of the source tarball so they have been removed in version 1.24 . Here are the urls of the files that were previously here plus a brief summary: https://sg.danny.cz/sg/sg3_utils.html - overview and examples of this package https://sg.danny.cz/sg/sg_dd.html - discussion and examples of the sg_dd utility which is a dd variant (also discusses the sgm_dd, sgp_dd and sg_read utilities) https://sg.danny.cz/sg/sg_ses.html - discussion and examples of the sg_ses utility. SCSI Enclosure Services (SES) devices may contain a lot of information, structured in a non-trivial way. https://sg.danny.cz/sg/sg_io.html - discussion of Linux SG_IO ioctl (SCSI pass-through) https://sg.danny.cz/sg/tools.html - overview of around 25 storage and SCSI tools Many of those pages are also found at: https://doug-gilbert.github.io/ There are two versions of sg_scan: one for Linux and the other for Windows. They have different man pages: sg_scan.8.linux and sg_scan.8.win32 with the Makefile logic (rule in Makefile.am) copying the appropriate one to sg_scan.8 . sg_scan is not supported for other ports. Douglas Gilbert 10th June 2022