How do I format my iomega drive to work for pc and

Hello,
With the drive plugged in, going into your Applications ' Utilities ' Disk Utility Select the drive and press Verify Disk, Repair Disk and Repair Permissions. If you don't have anything on the drive right now, try formatting it with the Mac OS Extended (Journaled) file system from the Disk Utility.
If that doesn't work the drive may be damaged. If you have another PC / Mac, trying plugging it in and see if it works there. If the drive is under 1 year old it should still be under warrantee, in which you could return it / RMA and get a new one sent back from the manufacture.
Regards, Chris

Are there any files on the disk-drive that you want to keep?
If so, connect it to a PC, and copy those files.

If not, connect it to the Mac, and allow the Mac to 'format' the drive, to initialize it for use on the Mac.

The problem most likely is the Dell does not recognize the MAC file format (HPFS), but the MAC will recognize the PC's FAT 32 file system.
First format the USB mass storage device using the Dell, format this device in FAT 32 not in NTFS because the MAC can read and write/copy PC format files but the Dell/PC cannot read MAC format files.
Then Safely remove this device, connect it to the MAC and copy the files onto this drive. When you connect this device to the Dell, you will be able to see the files.
Have fun.

as the mac has a diffreent format to a pc you cannot connect up the drive to a pc because it simply wont recodnise it. the best way is to network the 2 computers together then alow file sharing on the mac and searcc with windows through the network to find the drive. then copy them across the network to your pc. this will then reformat the files to PC files at they hit your PC

Try reformatting with a 50/50 partition.

Only format half the drive using the Win PC then format the other half with the Mac PC.

Your external hard drive is formatted NTFS. This is a Microsoft proprietary hard drive format which is why Mac does not have a driver to write to it out of the box. You have two options:

1) You can either make sure to buy Western Digital products which all come formatted FAT32 which is writable by Mac's and PC's (There is a 2GB file limitation, a single file can not be larger than 2GB with FAT32)

2) Install a NTFS driver. The NTFS-3g driver is stable and I have been using it since beginning of 2009 with no problems, you can download it here (http://www.ntfs-3g.org)

It depends on how you formatted the the drive.
If it was formatted FAT it will work on both Mac and PC.
If you formatted to HFS+ (the native mac format) then it will only work on a mac.

I not a big mac expert but it is probably to do with the way your portable drive is formatted. Windows pc's will recognize drives formatted as FAT32 or NTFS. Mac's will also recognize these formats. If the disk was originally formatted with a mac format like HFS is won't be recognisable to windows. Connect it to your mack and look for the Fike System Type. You could back up any files you have on the portabe device to your mac hard drive then format the drive on a windows machine. Start with a NTFS partition and see if your mac can read and write files to it. If not then try again with fa32. Once you have it going you can put your saved files back. Hope this helps. Let me know how you go.

check permissions on the drive. Also open disk utility, see how it was formatted.

Format your hardrive for Mac OS:
Go to Disk Utilities under the go menu in your finder. Select the external drive and click on the erase tab. Clikc erase again and it formats the drive. You can now copy files onto the drive.