hello, thank you for your answer.
why i install cham to the EFI? Because everybody says it is nicer there. for me it doesn't matter, just want to have the macosx running like before.
ok, which guide did i used? these all to mention would be a huge list. not, just kidding.
the normal install i took a guide from insanelywind.com for a vanilla install. and since the boot was not working i took the guide from here to install the cham manually.
ok, the the whole story:
i have a wind u100 with dual boot win7 pro and macosx based on netbookinstaller. (all were running with easybcd and cham, no problem so far).
i changed 2 weeks ago the hdd in miy u100 to a samsung 640 gb. and with that i want to have my system back. since the netbookinstaller was mainly designed for dell, i got to insanleywind and the idea of the vanilla install sounds nice to me.
i have a macosx install running, a retail dvd, made my usb hdd with bootloader and the snow install...
everything went fine. but booting has never been possible. I took some installer scripts, efi_finisher, updateEFI but nothing works for me. win7 is not on my netbook or doesn't bother because it just stands in the back and doesn't claim the boot table for himself.
so i have now on my hdd an EFI partition with 200 mb, a macosx partition and a ntfs partition. and i can't boot right from hdd. when i plug in my install usb hdd with the bootloader then i can get into both systems and both are working fine.
maybe someone might say this is enhanced security (you can only boot with an external usb as a key for the system) but i think it would be nicer to just boot from the internal hdd.
do you need something else?