installing an older version

I am putting together a complete,new, backup computer for my machine. (after a lightning storm took out my previous computer.)

I downloaded Linux-2.7.14 wheezy.iso  and used rufus.ie to make a usb image.
The new computer won't go past the boot screen. I fiddled around with the boot order etc but still no go.

I downloaded the latest version Debian 12 bookworm preempt-rt iso, made a usb image, and it starts right up to the install screen.

Is there something I need to do to make the older version start? I don't want to upgrade to the current version.because I would have to change a lot of things in my configuration.

I am running my previous backup computer currently. I suppose that I could clone the hard drive , or something like that.

tommylight wrote:

You have to disable "secure boot: and UEFI in BIOS for it to work, UEFI is usually disabled by choosing Legacy mode in BIOS for boot devices/order.

Thanks for the help.
I tried this but  the new computer will still not boot from the thumb drive.
The old computer will boot from the thumb drive.
The new motherboard does not have have CSM (compatibility support module) when using the integrated graphics on the processor .
The internet says something about if I add a graphics card that supports VBIOS display, I might be able to gain CSM functionality.
 

andypugh wrote:

You can just try loading the existing configuration files onto the Bookworm setup. It ought to just work (I spent a lot of effort on the automatic conversion scripts)

 

Thanks for the help.
The script to automatically re configure configuration files did not work.

missing [KINS]KINEMATICS=
          [KINS]JOINTS=
From looking at an example , it looks like I will have to change the ini file joints and axes.
It also looks like I will have to add loadrt [KINS]KINEMATICS to the HAL file.

Thanks for the kind offer. I made good progress , today, on upgrading it by hand.
I think that it is pretty close to running.

It is a hand written configuration so I am not surprised that the script did not work.