[arch-general] 2 partitions with same UUID

I had problems with launching win xp it was crashing often since it didn't like my sata hard(sdb) drive or that it wasn't on boot disk most likely and since my root started to run out of space I decided to make some changes. move sda1(root) to sda2 while increasing sda2 size and install windows on sda1. sda is ata hard drive I increased sda2(it was used to test other linux distro) size up to 10gb from ~5.5GB with gparted Then did "dd if="/dev/sda1 of=/dev/sda2" from live usb install. Now when I do "sudo blkid" it shows that both sda1 and sda2 have same UIID. Any ideas how could I fix this?