Tag Archives: usb

Updating the bios on a Dell PE 860 using USB

Sorry, this is going to be brief:

  1. Use unetbootin to put freedos on a USB stick
  2. Download the BIOS update from the Dell site (use the unpackaged version), copy to the root of the USB drive and rename to install.exe
  3. Boot the Dell machine to the USB stick (see previous post for details on this)
  4. When you’ve reached the FreeDOS boot menu, choose “FreeDOS Live CD with HIMEM only” (live CD only and HIMEM + EMM386 didn’t work for me)
  5. Change to the USB stick (should be “c:”)
  6. Install the new BIOS (“install”)

Booting the Dell PE 860 from USB

Plug in the USB stick, then in the bios:

Integrated Devices -> make sure USB Controller is “On with BIOS Support”
USB Flash Drive Emulation Type -> should be “Hard disk”
Hard-Disk Drive Sequence -> make sure the “Hard-disk-emulated USB flash drive” is first

Should now boot into USB (if you remove the USB at some point after setting the hard drive sequence it seems to change it back to actual hard drive over USB, so if you remove it and plug it back in to boot from it again, you’ll need to go back into the BIOS to change the setting again).