In your BIOS, do you have UEFI or "classic" for booting?
I just bought my wife an "entry level" laptop to keep in the kitchen for recipes, and to be able to boot from a CD to run my disk backup program I have to go into BIOS to switch it to "classic" mode to boot from the CD, and then back to UEFI to boot from the internal hard drive... as you say, a pain
Thanks John - I have UEFI - I guess it could have something to do with that.
Will try to "surf" the BIOS now for options
Well, finally I found out how to do it.
Inside the advanced mode under boot options, you can set the priority and boot drive order.
In there, you set your connector connected to your harddrive caddy to have first priority, and all the other options to "disable". In that way you force it to boot from the same connector (different physicla drive) each time.
Took a while to figure that out, though
Glad you found a solution for your situation... which I don't think would work for someone like me, who sometimes wants to bood from the DVD drive, which is what I do to run my drive backup program off of a Linux boot disc
Actually John - I can boot from a CD / DVD too.
In the main section of the BIOS, you put in boot device priority, and there I have CD/DVD first and then harddrive second. Then further down in the advanced section, I have configures the harddrive priority section itself, and it is within there that I have only one entry listed, so that it is forced to boot on whatever it recognices on this connector.
This means, that if I have a bootable disc in the CD/DVD it will boot on that, and if not on the harddrive. I usually make images from my PC with Acronis Trueimage, and I boot up on a USB stick, but in that case I just press F8 in post to choose bootdevice.