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7020100
(Get the code!)
Hello Lance,
There's two main types of PCs: 32-bit x86 processors and 64-bit x86-64 (aka AMD64). The 32-bit processors have significant memory restrictions and it has proven very challenging to provide Ubuntu for them. Our newer releases do not support 32-bit x86.
Whether or not you can run a newer version of Ubuntu on your computer depends upon what exactly you have. If you have a 64-bit capable processor and only installed the 32-bit version of Ubuntu by accident, you can do a fresh installation of Ubuntu. Be sure to make backups of your data before starting.
If you have a 32-bit-only processor, you cannot upgrade beyond 18.04 LTS. While we offer security updates for 18.04 LTS via Ubuntu Pro, we do not support 32-bit processors in this service.
You can find what your processor supports via the lscpu(1) program:
$ lscpu | grep op-mode
CPU op-mode(s): 32-bit, 64-bit
If it only reports 32-bit, then your computer will not run newer releases of Ubuntu. If it reports both 32-bit and 64-bit, then you can reinstall with a newer version.
Thanks