File names in the LPW/LOS operating system are weird. Instead of using / or \ as a separator, they use -
And weirdly enough LOS file names can and do contain / characters as you'll see here:
https://www.highcaffeinecontent.com/blog/20140527-Lisa-Pascal-Development-in-Lisa-WorkshopSo the root is just - and the devices are # followed by a number and then another separator. So "-#13-=" means current directory in 13 (I think)
equivalent on Linux/macos would be /13/.
Edit: just tried it.
The Sony 400k Floppy device is "-#13-" on LPW but when you insert the floppy disk it, you'll have to use the F)ILE-MGR menu to do that.
1. Press F to get to File Manager
2. Press ? to see the 2nd set of commands (probably can be skipped)
3. Press I to "Initialize" the device
4. type in "-#13" without quotes and hit enter.
5. Then hit Enter again for whole device.
6. Give it a name, I'd suggest the same name as the dc42 file without the dc42 extension. i.e. sounds
7. Hit enter for max number of files (it's 56) - this will create that many extents (inodes)