I believe this is a different problem from a set of fdisk, gparted questions already asked and answered.
gparted reports the partition as
/dev/sda as ntfs. I would have expected the partition to be reported as sda2 or sda4.
fixparts, and Windows disk show the full set of expected partitions ( /root, /home, /var, swap, C (ntfs), D (ntfs)).
so I think the partitions are there, but gparted and the install partitioner are reporting the only partition as '/dev/sda'.
How do I take the content of sfdisk or fdisk and write the partition information so that gparted reads the same set of partition data/meta-data?
I think I can fix the other issues when the data that gparted uses matches the actual partitions.
note: I do not want to wipe out all the existing partitions by re-init'ing parted.
After the last xubuntu upgrade in place, the mount partitions were not being recognized. I had thought it might have been an issue with disk uid's and the boot scripts would drop me into emergency root access. I backed up my work directories and attempted to do a fresh install from LiveCD, where this problem makes itself evidenced.