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On Monday 23 March 2009 20:16:15 Mick wrote: |
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> On Sunday 22 March 2009, Alan McKinnon wrote: |
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> > Caveat: I have no idea why this doesn't work, but if you make sda4 an |
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> > extended partition and create sda5 as a logical with exactly the same |
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> > start and end as you describe above, you do in fact lose all data. |
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> > Obviously there is a difference between a physical and a logical |
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> > partition with the same location, but I don't know why this is. |
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> |
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> I think that this is because the extended partition contains the extended |
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> partition table at its boot sector. A primary partition at the same |
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> position does not and therefore has a different offset. Having spent some |
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> interesting white-knuckle-ride moments with testdisk, I realised that |
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> carelessly switching between primary and extended/logical partitions is not |
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> something I would like to try again - unless I am playing around in a test |
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> environment. |
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Yes, that makes sense. Also explains why you can't just switching them around |
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without side-effects |
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> > Which is a pity, as 4 logical partitions is a little too constrictive, |
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> |
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> Do you mean primary? |
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Yes - that was a thinko :-0 |
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-- |
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alan dot mckinnon at gmail dot com |