How do I convert legacy/bin files to BSP files?

[Mynydd]

I want to edit a workshop map, but the file for the map is a .bin file. How do I convert it to a BSP file so I can edit it with Hammer?

[moving shadow]

.bsp file extensions aren't editable versions of a map, .vmf's are and a .bin isn't a map file, .bin is a disk image used by games.

You need to open the .bin file using something like powerISO and then in the contents of the .bin file should be the map you're looking for, then you can google how to change that map into a source bsp map or vmf.

if you can only do it to a bsp then you can decompile the bsp using vmex.

[Charles]

powerISO doesn't work with any addons, it just throws a myriad of error messages

[Pololak]

try open with winrar

[originalname]

.bin files are disk images for use by games, and in most cases, im my tiny tiny tiny experience with modding, if a garry's mod addon in its workshop folders (workshop folders for gmod being located at C:\Program Files (x86)\Steam\steamapps\workshop\content\4000)has a bin file, its probably located in C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\addons.