This part of the report seems to indicate that it might:
Originally Posted by oldfred
However I'm somewhat at a loss as to how to make the BIOS boot on sda1 (which is the EFI partition) the grub*.efi file, unless that's what the "sda1/boot/efi" option would accomplish.
=================== Final advice in case of recommended repair
Please do not forget to make your BIOS boot on sda1
the grub*.efi file in sda1 file!
=================== Default settings
This setting would purge (in order to fix packages) and reinstall the
grub-efi of sda6, using the following options: sda5/boot, sda1/boot/efi,
Additional repair would be performed: unhide-bootmenu-10s
It doesn't sound as if it would be too risky to try the "recommended repair" setting, in any event, once I've created the Win7 recovery DVDs to be able to get back to factory settings if things go wrong... Would you agree that this seems to be a reasonable plan?
My other options seem to be (1) install a second, blank, drive for Xubuntu, or (2) wipe Win7, move the recovery partition if need be, and make Xubuntu the only system on the disk. Both have disadvantages although I do have an empty 1-TB drive that could be used...