I have also found ,replacing and moving hard drives around as I seem to do, that on some older machines the cable selection and particular site on the board of connection is important. Some machines just don’t seem to work with a particular location and cable connections for a boot drive.
There may be something in the recovery partition and bios recovery systems which also overrides your manual selections.
I have had the surprise of two win os boot drives in the machine and the Hp system asking which drive I would like to boot to each time. That was a bonus.
They always seem to come good and boot.
|