Just for the record:

For our SMALL GLAM SLAM project we have received a donated HP Z400 Workstation . It’s has a Xeon CPU and can host 24Gb of ECC RAM, which seems appropiate for the project needs. But I found an annoying trouble installing Linux with a USB stick. It took me more than hour to search in the Internet for a solution. Now I just write here for the record and hoping the next one in this case could save precious time.

The tip is pretty simple: the Z400 HP BIOS doesn’t like booting Linux in USB sticks and the solution is upgrade the machine firmware with a «Linux BIOS» from HP o_O

The procedure:

• go to the Z400 downloads page ;
• choose «operating system» Linux and «version» Linux;
• at the BIOS section you’ll find the file to download to disk;
• now prepare a USB stick formated as VFAT and copy the firmware file inside;
• plug the stick in the Z400 machine, boot and open BIOS (press F10 key);
• In the BIOS application choose [File]->[Flash System ROM]
• then you’ll can select the firmware file from the USB memory and confirm the update process,
• reboot and that’s all.

After that I could boot my Fedora USB stick and install without any other trouble.

Hope you’ll find useful.