Dos command copy a:\1.dca d:

Hello,
In trying to copy in DOS a file from a: to d: I get the response "access denied"
10 answers Last reply
More about command copy
  1. what is disk D ?
  2. The command syntax is sound; suggest the floppy or file may be corrupt.

    What happens if you use the Win7 GUI to perform this?
  3. osamabinrobot said:
    what is disk D ?


    Also a very good point!
  4. can you get to a: and d: ?
  5. macsurvey1 said:
    Hello,
    In trying to copy in DOS a file from a: to d: I get the response "access denied"

    Disk a: is a 3.5" floppy, disk d: is a cd
  6. rgd1101 said:
    can you get to a: and d: ?

    I can access d: and view what is on it but cannon copy a: d: without getting access denied response
  7. noise said:
    The command syntax is sound; suggest the floppy or file may be corrupt.

    What happens if you use the Win7 GUI to perform this?

    Not sure I understand the question but I have tried to copy from a: to d: in windows :non:
  8. of course you'll get access denied when using that command. for the copy command optical devices are read only, it doesn't have the ability of burning files so the error is legit ;)
  9. deicide said:
    of course you'll get access denied when using that command. for the copy command optical devices are read only, it doesn't have the ability of burning files so the error is legit ;)


    +1

    You cannot use the command prompt to copy from a floppy to a CD, you would need Windows Explorer to do that, and you would need to finalize the disc in order for the data to be read from another PC.

    http://windows.microsoft.com/is-IS/windows7/Burn-a-CD-or-DVD-in-Windows-Explorer

    Edit: I am also going to step outside of the box in this case and ask you to make sure your CD drive is actually capable of writing CDs (which would make it a CD-RW drive instead of a CD-ROM). I only do this because you asked a question that is suitable for the 1990s and not so much today.
  10. You can't use the DOS copy command to write a file to a CD. CD's require that you queue up a series of files and then write them all at once(even if you only queue up one file). This is because CD's store data by burning it into the surface of the disk using a laser. The DOS copy command cannot do that because it is intended for use with devices that store the data instantaneously (i.e. HDD's, Floppies, removable hard disks, USB flash drives, USB hard drives, external SATA drives).

    Take a look at these articles on wikipepia.com for more information on how CD's, DVD's, and Blu-ray's(AKA optical media) work:
    http://en.wikipedia.org/wiki/CD-ROM
    http://en.wikipedia.org/wiki/DVD
    http://en.wikipedia.org/wiki/Blu-ray_Disc
    http://en.wikipedia.org/wiki/Optical_disc
    http://en.wikipedia.org/wiki/Optical_disc_recording_technologies
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