The classic xfm file manager is available in Debian Wheezy, but not other Debian/Ubuntu releases that dCore is based on. The Debian Wheezy package of xfm has been uploaded to the prebuilt area so all dCore x86 users can install it. Tested on dCore-wheezy, dCore-stretch, and dCore-zesty, so should work across all dCore x86 ports.