Well, did you create such a partition?

http://www.nux.ro/archive/2011/11/You_have_not_created_a_bootloader_stage1_target_device.html

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----- Original Message -----
> From: "fw Liu" <[log in to unmask]>
> To: [log in to unmask]
> Sent: Wednesday, 8 October, 2014 00:31:12
> Subject: SL7 on macbook pro

> Hi guys,
> 
>  I tried to install SL7 on macbook pro (EFI booting system) with the
> following partition error
> "You have not created a boot loader stage1 target device. You have not
> created a bootable partition",
> it seems that it has been a bug for quite a while. Fedora 21 alpha fixed
> the issue (I successfully install Fedora 21-alpha release on it), any one
> has a good solution/workaround to this issue for SL7 (I didn't see it
> online)? Or we have to wait for the fix in the next release? thanks.
> 
>      Feng