#3 unable direct install fedora 17 or long time install win7

[small]

i am study PXE, when i am using pytarget as iscsi target to install fedora 17,
it will fail to finish. when i install windows 7, pytarget will change port routine,
and install windows 7 take long time, about 5 hours to install a windows 7,
but i am install windows 8 and windows 8 server very fast, how can i solve this problem