I couldn't load it on a FAT32 partition on an XP HOME pc. So I loaded
it on the NTSF partition of the same drive.
I don't know why it did & now doesn't work but it could be that you
need to defrag and clear some space.
To change partition types you need to re-format (resetting partitions
will lose data structure - reformat required).
You could just pop in an additional harddrive (slave) and have it
formatted NTFS - then install it on that drive D:/postgres/
Not the answer you'd want but good luck.
Troy