This seems really strange. Just to clarify, I am assumming this disk is being mounted on the linux box, then umounted and physically taken to a winbox and tried, then a macbox and tried, right? Just making sure this disk isn't being shared over the network via Samba and Netatalk. If my assumption is correct, does the zip disk icon on the mac desktop look like an IBM formatted one? What does the info menu item say? Just blindly asking questions, Troy >>> kbullock at ringworld.org 02/16/01 08:16PM >>> On Fri, 16 Feb 2001 HOEFFNER at dcmir.med.umn.edu wrote: > I took a 100M zip disk and used fdisk to create a partition (#1 -- it chooses > Linux type partitions). I then used mkfs to create a vfat filesystem (that way, > I'm hoping there wouldn't be any issues with UID's). Linux will put a file on > the disk and read it. Winders will also read the file, but the mac doesn't see > it. The mac can write a file to it, and read it back, but back on Linux those > files are gone (go back to the mac and they're still there) and the original > file that was written to it is still there and readable. So the disk has a linux partition type with a vfat filesystem on it? If that's the case, change the partition type to some manner of FAT partition. Mixing filesystems and partition types that don't normally go together generally just confuses the computer.