Large msdosfs disk will not mount on RELENG_6

[Clayton Milos]

----- Original Message ----- 
From: "Richard Coleman" <rcoleman at criticalmagic.com>
To: <freebsd-stable at freebsd.org>
Sent: Monday, November 27, 2006 5:23 AM
Subject: Large msdosfs disk will not mount on RELENG_6


>I just bought a large external hard drive for home backups (500g Western 
>Digital My Book).  When I plug it in to my machine (RELENG_6 from about a 
>week ago), the system sees the device just fine:
>
> Nov 26 22:03:21 neptune kernel: umass0: Western Digital External HDD, rev 
> 2.00/1.06, addr 2
> Nov 26 22:03:21 neptune kernel: uhid1: Western Digital External HDD, rev 
> 2.00/1.06, addr 2, iclass 8/6
> Nov 26 22:03:21 neptune kernel: da0 at umass-sim0 bus 0 target 0 lun 0
> Nov 26 22:03:21 neptune kernel: da0: <WD 5000YS External 106a> Fixed 
> Direct Access SCSI-4 device
> Nov 26 22:03:21 neptune kernel: da0: 40.000MB/s transfers
> Nov 26 22:03:21 neptune kernel: da0: 476940MB (976773168 512 byte sectors: 
> 255H 63S/T 60801C)
>
>
> But when I try to mount the drive (mount -t msdos /dev/da0 /mnt), the 
> system gives the following error:
>
> Nov 26 22:06:41 neptune kernel: mountmsdosfs(): disk too big, sorry
>
> I was surprised to see a file system limitation on FreeBSD that Windows 
> does not have.  I will probably reformat the system to ufs2, but thought I 
> would mention this error message.  I'm sure these drives will become 
> increasingly common.
>
> Richard Coleman
> rcoleman at criticalmagic.com

I am very suprised at all that windows would allow you to format a 500G 
drive into a single 500G FAT32 partition.

As far as I am aware windows 2000 and xp will only allow you to format up to 
a 32G dive with FAT32. Any bigger and it will force you to use NTFS. The 
other strange thing is tht you are trying to mount /dev/da0 and not 
/dev/de0s1.

How did you format this drive ?

-Clay