> For the complete documentation index, see [llms.txt](https://docs.excl.ornl.gov/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.excl.ornl.gov/system-overview/lewis.md).

# lewis

Currently has a U250 installed with a custom application deployed which requires an older linux kernel.

Lewis is configured with kernel 5.15.0.

Hold set with:

```bash
apt-mark hold 5.15.0-72-generic
```

To remove hold:

```bash
apt-mark unhold 5.15.0-72-generic
```