[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: 28-bit LBA limit and dd
From: |
Pádraig Brady |
Subject: |
Re: 28-bit LBA limit and dd |
Date: |
Fri, 06 Nov 2009 09:40:11 +0000 |
User-agent: |
Thunderbird 2.0.0.6 (X11/20071008) |
address@hidden wrote:
> Hi,
>
> I have a question according to the 28-bit LBA limit and the GNU dd tool.
>
> The english Wikipedia states, that Seagate warns, that GNU dd may fail to
> opperate files/images larger than 128GB due to the mentioned old 28-bit LBA
> limit. I searched today a lot on the web, but didn't find any hint, whether
> this affects the current version of dd.
>
> Unfortunately I have no insights in the innards of the GNU coreutils, and how
> they exactly work.
>
> So, is the current version of dd capable of creating disk images larger than
> 128GB?
dd should be able to stream aribtrary amounts of data.
For seeking etc. it uses off_t internally which is 63 bits on my system
$ printf "%'d\n" $((2**63-1))
9,223,372,036,854,775,807
Your file systems and block devices will have lower limits.
cheers,
Pádraig.