I manage to mount my Iomega 160Gb harddrive but the problem is writing to it. When I try to write to it I get an error message that says something like: Disc full.
although it´s not full.

I use Mandrake 9.1 and my fstab entry look like this:


/dev/sda1 /mnt/iomega auto users,rw,iocharset=iso88591,codepage=850,umask=0 0 0

filesystem on the harddrive is fat32 because i want it work both in windows and linux.

Can someone please give me some ideas how to proceed.

Try changing your fstab line to this:

/dev/sda1 /mnt/iomega vfat user,noauto,iocharset=iso88591,codepage=850,umask=0 0 0

Note, the drive will not be automounted at boot(noauto option) which is generally what you want for a removable storage device. So you'll have to mount the drive after you boot if you want to use it but ordinary users are given the ability to mount the drive(user option). Also, the drive is explicitly set up as a FAT32 drive(vfat). All users will have read/write privileges to the drive(umask=0 option). This is typically how most people would set up a removable FAT32 storage device.