To create a new TR-DOS disk image
On the File menu, click New.
In the dialog box, click the Blank TR-DOS disk (.scl) or Blank TR-DOS disk (.trd) icon.
Enter a name for the file.
Choose a location for the file and click OK.
On the resulting dialog box, choose which drive to insert the new disk image into and click OK.
Tip
Use the .scl format if you can as these are considerably smaller than the equivalent .trd, .fdi or .udi file.
You can also use the shortcut key Ctrl+N to create a disk image.
If the Beta 128 disk drives window is hidden, click Disk Drives on the View menu to see which disk images are in which drives.