[arch-dev-public] Devices >2TB

Dale Blount dale at archlinux.org
Mon Jun 18 21:28:29 EDT 2007

On Mon, 2007-06-18 at 17:55 -0400, Paul Mattal wrote:
> Anyone know if our standard kernels are capable of seeing/handling 
> devices that are >2TB in size? I know you need 48-bit LBA to do 
> this, but clearly 48-bit LBA is supported on the machines I'm using 
> and in our kernel.

Probably not.

> The 2TB limit, as I understand it, comes from something *somewhere* 
> being limited to a 32-bit address. Is it the kernel, or perhaps my 
> SATA controller somehow? Or the sata_nv driver?

Nope, don't think that's it.

> The setup is that I'm hooking up a hardware-raid-enclosure external 
> cabinet up via the ESATA port to the SATA controller built into the 
> NVidia NForce 430 chipset on the motherboard. We can't see more than 
> 2TB.

fdisk/cfdisk limitation.  See here:


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