01-13-2019 07:21 AM
This appears to be a "feature" and not a "bug." I would very much like to boot from external Thunderbolt drives to work with different operating systems. I request that Thinkpad engineers update the BIOS to allow seeing external Thunderbolt drives at the BIOS boot menu.
01-13-2019 11:22 AM - edited 01-13-2019 11:23 AM
IIRC there's a "Thunderbolt pre-boot" toggle in BIOS. Did you try enabling it to see it allows to boot on a TB storage ?
01-13-2019 03:11 PM
I did try that in the BIOS. The Thunderbolt drive still did not show up in the Boot Menu, but--oddly enough--sometimes the system would boot to the Thunderbolt drive--but it's very inconsistent! Disk Management does show the Thunderbolt drive; if it's listed as Disk 0, it's the boot drive, but normally it's Disk 2 (with my two internal NVMe drives listed as Disk 0 and Disk 1). Another odd thing is that NVMe0 doesn't always appear as Disk 0, or NVMe1 as Disk 1, which is what I would think it would show. Anyway, I'm still waiting for a BIOS update to address this issue. Thanks.
01-13-2019 03:50 PM
Are you talking about a HDD/SSD in a Thunderbolt housing? Thumb drive?
I would turn off fast boot and see if that helps
01-13-2019 07:53 PM
The drive I'm discussing is the external HP P800 256 GB Thunderbolt 3. So it's an NVMe in a housing. It's the same exact size as my two internal NVMe drives. Cloning works better that way.
01-13-2019 08:25 PM
I don't have similar hardware so I cannot test. At one point, you said it sometimes shows up in the menu, so I would guess a timing issue. That's why I suggested turning off fast boot, but, beyond that, I have no suggestions.
01-14-2019 09:34 AM
Yes, I turned off Quick Boot (turned on Diagnostics)--no help, but thanks for the suggestion. The next thing I'm going to try is to get a Thunderbolt to USB 3.1 adapter and connect to a USB port on the P72.
01-15-2019 12:09 PM
I got the Thunderbolt 3 to USB 3.1 adapter and attached the external Thunderbolt 3 drive to it. The Thinkpad saw that something was there but said that the performance would be limited. The drive was not listed in Disk Management. I then restarted and went to the Boot Menu, but the Thunderbolt drive (on the USB port) was not listed. So this idea failed, unfortunately.
01-15-2019 02:07 PM
I have never seen any documentation that indicates that this is supposed to work. Perhaps someone with similar hardware can try it. I would expect an I7 to work (or not work) exactly like your Xeon.
01-17-2019 11:43 AM
OK, today I ran Rufus to create a bootable USB drive with EaseUS backup/restore on it. If I have an external Thunderbolt drive attached to my P72, then EaseUS will see the drive, so I could then restore from the Thunderbolt to an internal NVMe drive, should that become necessary. This is certainly an additional step, but at least I have a method to restore my internal drives if (in the worst case) both should go down. Nonetheless, I still request that Thinkpad engineers revise the BIOS so that I can boot directly to external Thunderbolt drives!