Multiple MSDOSFS partitions on iomega 250GB external disk

Chandan Haldar chandanh at
Mon Feb 20 00:53:14 PST 2006

Answering myself.  Iomega support confirmed that partitioning the 250GB
external HDD was possible.  I partitioned and formatted the disk into
two approx 125GB FAT32 partitions using Win2K disk manager.  Both the
partitions show up, mount, and work fine under FreeBSD (and also under


Chandan Haldar wrote:

>I have browsed the threads on using >128GB disks with MSDOSFS  
>(msdosfsmount()disk too big.  Sorry" etc...).  It seems to me from the 
>mails in the archive that there are basically two ways to cope with this 
>1. Rebuild kernel with MSDOSFS_LARGE enabled and pay the price in terms 
>of extra 32 bytes per file memory usage.
>2. Partition the disk into multiple <128GB partitions.
>I'm using a iomega 250GB firewire/usb external disk that I need to 
>access from Windoz as well as from FreeBSD.  I'm inclined to go the 
>second way and chop it up into multiple pieces.  At the iomega website, 
>they are washing their hands off the problem with something like this: 
>iomega does not recommend partitioning the disk into multiple 
>partitions... etc.
>Can anyone on this list confirm actually making two or more FAT32 
>partitions on a iomega 250 GB desktop external firewire/usb harddrive 
>and successfully using all partitions on both Windows and FreeBSD?  Any 
>issues and experiences to share?

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