[iyonix-support] Re: USB hard drive
- From: Steve Bradbury <steve.bradbury@xxxxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Thu, 22 Nov 2007 15:41:28 GMT
On 22 Nov 2007 in message <4f45cb292bchris@xxxxxxxxxxxx>
Chris <chris@xxxxxxxxxxxx> wrote:
> Question 2: My hard-drive supports 'LBA' and, by selecting this in
> DataSafe's formatter, I was able to almost double its capacity from 8
> Gb to 15 Gb. What is LBA and is there a downside to using it to
> increase a drive's capacity in this way?
>
Logical Block Addressing is the method used to locate blocks on the
disk. It took over from Cylinder/Head/Sector addressing some years ago.
You have just demonstrated one of the reasons LBA took over - CHS is
only capable of addressing 7.8GB
[simplified answer - see www.wikipedia.org/wiki/Logical_block_addressing
and other places for more detail]
--
Steve Bradbury
Senior Structural Engineer
1242 537832
Alan Dick Europe
steve.bradbury@xxxxxxxxxxxx
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