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Article #620Re: Overlapping partitions?
From: Matthew J. Francis
Date: Fri, 19 Jun 1998 00:00
Date: Fri, 19 Jun 1998 00:00
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2270 bytes
Karsten Ballueder wrote:
> Hi,
>
> I partitioned a new 4 GIB drive for Linux yesterday and fdisk warned
> me about the partitions overlapping each other.
> In fact, the end of one partition lies behind the start of the next,
> but not behind the begin of the next.
>
> Can anyone make sense of this? What's the difference between the
> "start" and the "begin" of a partition? I didn't succeed chossing the
> partitionn sizes such as to avoid that overlap.
Cf. my own partition table:
Disk /dev/hda: 32 heads, 63 sectors, 4200 cylinders
Units = cylinders of 2016 * 512 bytes
Device Boot Begin Start End Blocks Id System
/dev/hda1 1 1 1024 1032160+ 83 Linux native
/dev/hda2 1024 1025 3105 2097648 83 Linux native
/dev/hda3 3072 3106 3227 122976 83 Linux native
/dev/hda4 3072 3228 4200 980784 83 Linux native
If it looks something like that, then your problem is likely that you
set your disk to "Large" mode in BIOS, rather than LBA.
This appears to be non-serious and ignorable. However, one warning:
never change the mapping of a drive with live partitions; either move
everything off it and re-format after changing to LBA, or just live
with it. As long as the Starts and Ends don't overlap, you should be
safe.
Cheers,
-Matt.
"The results of this intrusion into your life will be used 'responsibly'
in ways you cannot even begin to imagine. Of course, the innocent have
nothing to fear from the rapidly expanding data industry."
- Radiohead, Airbag/How Am I Driving?
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