Lenovo ThinkPad X61 Series Windows Recovery Restore Boot Disk DVD USB ISO & Drivers
How to boot from USB disk in the BIOS (Boot Menu) - ideapad/Lenovo laptops - Lenovo Support US
x61s Middleton's BIOS issue : r/thinkpad
Boot lenovo thinkpad from USB - YouTube
Another addition: Lenovo ThinkPad X61s : r/thinkpad
Boot lenovo thinkpad from USB - YouTube
Lenovo T61 Boot Menu || how to Lenovo T61 Pen Drive Boot ..!! - YouTube
LENOVO THINKPAD X61 7673 TABLET USER MANUAL | ManualsLib
Installation notes Void Linux musl on ThinkPad X61. (USB>>1st Boot) Should work for other ThinkPads in the X-series. Comment and let me know your opinion. I hope to help my peers out. :