This is a bizarre one.
I boot into Linux from a USB flash drive. This USB stick was plugged into the top front USB port and booted (legacy mode) fine from that. Then one day the BIOS would report there was no bootable media available.
So I moved the USB stick to the back far right port (viewing from behind). It booted fine. Then one day the BIOS would report there was no bootable media available. So I tried moving it to the port I'd been using before (front top) but still wouldn't boot.
So I moved the USB stick to the back far left port (viewing from behind). It booted fine.
I'm scared the BIOS is gradually freezing out USB ports I can boot from. I'm worried that soon I'll run out of USB ports I can boot from.
Anybody else had this problem? What could it possibly be?
fsysWhat could it possibly be?
I suggest that you try another USB drive. This could be an issue with the USB drive or other hardware in the system. Hardware that is not validated can cause odd issues throughout the system. You should remove or swap hardware to try to locate the problem device.
If the USB ports are still functional then it is likely the act of reseating or retrying the USB drive that is allowing it to eventually boot successfully. If the USB ports are no longer functional after using this USB drive in them then the USB drive may be physically damaging the ports.
Daniel MysingerGet Support on Twitter @DellCaresPro
Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)
Thank you for your response. Unfortunately that answer does not correlate with the symptoms: the USB works fine, is written to, is read from, the operating system once booted.
But any USB port previously used for a boot is no longer recognises bootable media in that USB port. This seems to be a serious BIOS issue.
When will a BIOS fix be available that allows a USB port to be used more than once for booting in legacy mode?