As John said the standard is 48 tpi. To round things out the 1001/8050/8250 drives want 96 tpi (according to Commodore) although I have use 48 tpi but without knowing the long term storage situation. Ernie > From: Leif Bloomquist <leif@xxxxxxxxxxxxxxxx> > Organization: Schema Factor > Reply-To: leif@xxxxxxxxxxxxxxxx > Date: Sun, 05 Feb 2006 15:22:45 -0500 > To: "torontocbm@xxxxxxxxxxxxx" <torontocbm@xxxxxxxxxxxxx> > Subject: [torontocbm] Re: Looking for 5 1/4" floppies > > > > I have another question for the group: What is the TPI (tracks-per > inch) for Commodore disks? I believe it's 48 TPI, but I've seen that > number on both single density and double density disks. Can anyone > clarify this? > > > Leif >