If TRSDOS is the same as MS DOS, the following commands at the DOS prompt will make copies of the diskette.
DISKCOPY A: A: (for systems with only one floppy drive)
DISKCOPY A: B: (for systems with only two identical floppy drives)
or
COPY A:*.* B:*.* (for systems with one or two floppy drives)
If you have a hard drive, go to the C> prompt and enter "DISKCOPY A: A:" (or "DISKCOPY A: B:"). This will make an exact copy of any original diskette placed in drive A:. After you enter the command, just follow the on screen prompts.
If you do not have a hard drive, boot with a floppy. After the system boots, insert a diskette that contains DISKCOPY.COM or DISKCOPY.EXE then enter "DISKCOPY A: A:" (or "DISKCOPY A: B:") and follow the on screen prompts.
An alternative method is to use "COPY A:*.* to B:*.*". This does not make an exact duplicate of the original diskette but will copy all files that are not hidden files. After entering the command just follow the on screen prompts.
Old PC Man