Re: support for drives larger than 2TiB

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Jul 24, 2010 at 2:40 PM, Yuhong Bao <yuhongbao_386@xxxxxxxxxxx> wrote:
>
>> However, 2TiB limit is
>> inherent in the BIOS programming interface and currently the only way
>> to overcome it is using a completely different BIOS interface (EFI,
>> that is).
> Nope, look at the Int13 extensions, it already support 64-bit LBA.
>
> Yuhong Bao

64-bit LBA?  I assume you meant 48-bit LBA from ATA-7.  It will
address up to PBs I believe.  (KB, MB, GB, TB, PB, ....)

But I've seen lots of "48-bit LBA" supporting controllers that hit
limits at 500GB, 1TB, etc. and needed new firmware updates.

Secondly, if you look at the table on the right of
http://en.wikipedia.org/wiki/Master_boot_record#Disk_partitioning you
see that the starting sector of a partition is defined with a 32-bit
value.

ie. 2TB with 512 byte sectors.

The normal solution is to move to a GPT which requires EFI if you want
to boot from it.

Greg
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux