Q: I want to copy all the files from a 5.25-inch floppy disk on to a 3.5-inch floppy disk, including the ones in some sub-directories. The COPY command won’t copy the contents of sub-directories, but when I try to use DISKCOPY I get the error message “incompatible format for drive’. What’s going wrong?

A: There are three commands to copy files from one disk to another: COPY, XCOPY and DISKCOPY. They work in different ways, and for any copy operation you need to choose the tool that’s most appropriate for what you want to do.

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The problem with COPY is that it only works on the directory you specify and it cannot create new directories on the new disk. XCOPY works in a similar way to COPY but is more intelligent. You can tell it to look inside sub-directories, and it will automatically create those sub-directories on the new disk.

The command you need to type in, assuming you are copying from drive A to drive B, is:

XCOPY A:*.* B: /S

Is is the /S switch that tells XCOPY to work on subdirectories too.

Who remembers using a copy command which didn’t work with subdirectories?

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