DBC Support - Frequently Asked Questions

Q: How do I put the interim update files (.UPD) or big DBC datafiles onto multiple floppies?

After you download the UPD file from the WWW site, you may find that the file is too big to fit on a single floppy disk. Large datafiles may also be too large to fit on a floppy. The easiest way to put big files (>1.44 megabytes) on more than one floppy is to use a 3rd-party utility such as PKWare's "PKZip" utility.

PKZip is "shareware" which you can download from http://www.pkware.com. They have both Windows versions and DOS versions.

If you choose the Windows version of PKZip, you will automatically be prompted for more diskettes when the first diskette is full.

Direct from the PKWare web site:

"The current version of PKZIP for Windows (2.60) has the ability to create a multiple volume archive (spanned .ZIP file). When PKZIP for Windows fills the contents of a removeable media, it will automatically prompt for another diskette." (Source: http://www.pkware.com/shareware/pkzip_win.html)

If you are using the DOS version of "pkzip", you can zip a single large file to multiple floppy diskettes, you should use the -& option. If you using DOS or Windows (but not Windows NT) , an example of this would be:

pkzip -& a:\backup.zip c:\myfile.ext

If you are using Windows NT, you must put quotes around the -& since the & character is a command line terminator.

pkzip "-&" a:\backup.zip c:\myfile.ext

In the above examples, A:\backup.zip is the .ZIP file to be created and C:\myfile.ext is the large file I wished to compress across the diskettes. (Source: http://www.pkware.com/shareware/pkz250dos.html)