From: "Joerg Mensmann" References: <7v7lar$aa1$1 AT news8 DOT svr DOT pol DOT co DOT uk> Subject: Re: Disk Serial Numbers Date: Thu, 28 Oct 1999 15:42:01 +0200 Lines: 18 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.00.2314.1300 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2314.1300 Message-ID: Newsgroups: comp.games.development.programming.misc,comp.os.msdos.djgpp NNTP-Posting-Host: r-13.dusseldorf.ipdial.viaginterkom.de 62.180.33.13 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Ben Davis wrote: > I have noticed that some floppy disks have serial numbers; the serial > number appears when I type 'dir/w'. Can someone confirm that the > serial number of a floppy disk cannot be changed through software The serial number is written to the disk when it is formated. You might want to look at some FAT filesystem-specifications to get the exact position on disk. But you can be absolutely sure that it can be changed by software (no copy-protection this way). bye Joerg