32bit filesystem limitations

John Baldwin jhb at freebsd.org
Wed Mar 25 07:20:08 PDT 2009

On Wednesday 25 March 2009 10:03:36 am Ivan Voras wrote:
> Andrei Kolu wrote:
> > Hi,
> > 
> > I have trouble to create FreeBSD 7.1 i386 partition/slice to 3Ware 8port
> > raid kontroller with 8x500GB drives attached to it. Raid 5 massive is
> > 3,1TB in size and during sysinstall installation I select whole
> > available space but after restart I can access only 1,2TB from it. What
> > is the problem?
> MS-DOS fdisk partitions and bsdlabel partitions both have 32-bit
> limitations on the file system size. You should use gpart to partition
> the large volume. That is, except if you want to boot from it also -
> then it's a bit problematic; it's best to create two logical drives in
> your RAID controller - one small drive for the OS (something like 8 GB
> to keep the ports and all) and the rest for the data.

Well, you need to use GPT, either via gpart(8) or gpt(8).  You can then use 
gptboot to boot from that volume if desired.

John Baldwin

More information about the freebsd-stable mailing list