Hi,
I've run into a problem with sfdisk where resizing an extended partition
doesn't do the right thing. I have an extended partition at /dev/sda4
that has four partitions, so the last partition is /dev/sda8, and I want
to extend /dev/sda8 to the maximum possible size. So I issue these two
commands:
echo ,+, | sfdisk -N4 /dev/sda
echo ,+, | sfdisk -N8 /dev/sda
This grows /dev/sda4 to the maximum size, but /dev/sda8 is unchanged.
This also occurs if I calculate the sizes by hand instead of using `+`.
The problem happens during the first command. The size of /dev/sda4 is
updated in the MBR, but none of the EBRs are changed, so the lengths of
each of the extended partitions in the EBRs are wrong.
You can work around this problem by issuing the following after resizing
the extended partition:
sfdisk -d /dev/sda | sfdisk /dev/sda
This will rebuild the EBRs so that they're consistent with the length of
the extended partition in the MBR.
Let me know if you need any more info or if my explanation of the
problem isn't clear.
--
Justin Bogner
--
To unsubscribe from this list: send the line "unsubscribe util-linux" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
