FAT32 formatted disks have a 2GB file size limit. The HFS+ Journaled format does not have this limitation.
Maybe you were trying to copy from HFS+ to FAT32 when you saw the errors? I frequently do Finder copies from FAT32 to HFS+ without issue.
When formatting a new drive, I’ll typically use Disk Utility and do the following:
1. Select the device (not the volume) in the list on the left
2. Open the “Partition” tab
3. For Partition Layout, select “1 Partition”
4. Select your Format – “Mac OS Extended (Journaled)”
5. Click the “Options…” button below the partition layout view and choose “GUID Partition Table”
6. Click “Apply” in the lower right-hand corner
There are a few drives that I do exchange with Windows users, and for those units I make 2 modifications to the above steps:
4. Select format “ExFAT”
5. Click the “Options…” button below the partition layout view and choose “Master Boot Record”
I use ExFAT because it can handle files larger than 2GB.
One other thing I do is check the Finder Info for each Mac-formatted external drive and make sure “Ignore Ownership” is checked and applied to all enclosed files / folders. The option isn’t available on the Windows-formatted drives.
Doug Metz
Anode