bryan@cbnewsd.ATT.COM (bryan.k.delaney) (08/22/89)
Hello, You should not use 360/720K at 1.2M because there is a big difference in the Oxide formula used in them. 360/720K disks use the same oxide formula and I have never had a problem using 360K disks at 720K. But, 1.2M disks require a different write current than the 360/720K disks so you should not use them at 360/720K either. Bryan DeLaney AT&T Bell Laboratories Naperville IL att!ihlpl!bryan