Robert in CA wrote:
+++++ Two disks were present when the menu was rebuilt,
and now the menu choices are both being shown.
Rebuilding the menu with one disk only present, will fix it.
Macrium boot CD has a "boot repair" menu item, which can be
used to restore normal boot behavior with one disk.

I tried running the boot repair off the rescue cd (ver 7.2) to correct the
WBN screen logon on the 780 but I'm not sure which items to un-tick

https://postimg.cc/p5M2g2BZ

https://postimg.cc/GTPcRZ71

https://postimg.cc/t11pJ1Sk

https://postimg.cc/fSvhpYyz

Robert

If you look in Disk Management, System Reserved is marked "Active"
and "System". It is the Active (Boot Flag = 0x80) partition
that the boot process starts on.

You can see the Macrium menu identified a partition, and it
did that by looking for the Boot Flag. Sometimes the Boot Flag
is not in the right place and needs correction, but this does
not happen too often. If two disk drives were present, there
could be confusion about which one.

You will be asked to identify the Active partition, because
that's where the BCD file for the boot menu goes.

You will be asked to identify all the C: partitions, so they
can be added to the boot menu as boot-time-options.

The four tick boxes a

Reset the Boot Disk ID

This is a four byte field in the MBR, near to the four entry
partition table. The disk may be named ABCD1234 for example.
When cloning a disk, initially two disks have the same
ABCD1234. This is bad. If left this way, the first disk is
"Online", the second disk goes "Offline". Not very useful for
daily work. If ticking this box, a new DiskID is assigned to the
drive needing boot work.

When Macrium clones, the second disk is automatically given a
new ABCD1234, so this tick box is not needed. If duplicating a
disk drive using dd.exe (Disk Dump), then, a new DiskID is needed
and the box should be ticked.

It generally does not hurt anything.

Replace the Master Boor Record (MBR)

That's the boot code, in the first 440 bytes or so.
I'd have to look up the exact number of bytes. There is
boot code in there and the four primary partition table entries,
as examples of materials that are present.

If a disk was zeroed, then partitioned, the boot code would
be missing. But Macrium prepared disks would not usually be missing
this code. If the BIOS simply won't boot from the hard disk, claiming
there is nothing there, you can tick this box.

Replace Partition Sector Boot Code

This is three sectors in the Active Partition. The MBR jumps to
that code. If a partition is "formatted" with a format routine,
the three sectors are lost. Generally, if Macrium clones a partition
or restored from backup, everything there is OK and the tick box
is not needed.

Rebuild the Boot Configuration

This is the one normally ticked. If you're going to use this
feature, Boot Repair, you tick this one, as it's the only option
that makes sense for the feature :-)

So bare minimum, tick the last box. Tick other boxes, if
the first attempt at boot repair, does not work.

HTH,
Paul