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Path: sserve!newshost.anu.edu.au!munnari.oz.au!constellation!convex!convex!convex!cs.utexas.edu!math.ohio-state.edu!magnus.acs.ohio-state.edu!csn!hellgate.utah.edu!cc.usu.edu!ivie From: ivie@cc.usu.edu Newsgroups: comp.os.386bsd.misc Subject: Windows/NT & the boot block Message-ID: <1993May29.153921.68714@cc.usu.edu> Date: 29 May 93 15:39:21 MDT Organization: Utah State University Lines: 27 For what it's worth, here's what I have seen Windows/NT do to the partition table during installation: - Using the Relative Sectors and Number Of Sectors fields, rebuild the physical starting and ending locations of the partition. - If more than one partition is marked bootable, change the non-DOS partition to be non-bootable. - Sort the partition table so that the partitions appear in the order that they reside on the disk. By judiciously dropping NOPs into the multi-os boot block that I'm using (BOOTANY), I have been able to build a boot block that survives the Windows/NT installation process. I have had to do the following to the boot block: - Make it not stop displaying the menu when it encounters a non-bootable partition. - Make it attempt to boot the specified partition whether or not it is marked bootable in the partition table. Other boot selectors might need different modifications. Roger Ivie ivie@cc.usu.edu