> Guys, thanks a lot for the explanations!
>
> Actually, it seems like one can backup information on ALL partitions
>by using the command "sfdisk -dx /dev/hdX". Supposedly, it reads not
>only primary but also extended partitions. "sfdisk -x /dev/hdX" should
>be then able to write whatever is known back to the disk.
MBR size is 448 bytes, the rest is "the partition table", with space for four
entries. If one wants more, then s/he creates a [primary] partition, tagging
it "extended", and the "extended partiton table" is within that primary
partition. So yes, by dd'ing /dev/hdX, you get everything. Including "lost
sectors" if you dd it back to a bigger HD.
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