On Friday, January 26, 2018 at 4:59:00 PM UTC+1, bill...@gmail.com wrote:
> I tried to send this question from the email address I used to subscribe to 
> the user group, but it's been about two hours and it hasn't shown up. I'm 
> assuming it's a Google thing, but I apologize if this question shows up twice.
> So, here I go again.  I'm a newbie with Qubes, but I love the idea.  I tried 
> installing 3.2 some time ago, but had hardware difficulties, so I decided to 
> give 4.0 a try.  
> I currently have a Dell Inspiron 5759 laptop, System BIOS 1.3.0, ePSA build 
> 4304.09 UEFI ROM, Intel i7-6500u cpu, secure boot disabled, Intel SGX 
> disasbled, fast boot set to "thorough" (though the same results occur with it 
> set ot "auto").  It is set up as dual boot with KDE Neon linux and Windows 10.
> I decided to give Qubes 4.0 rc3 a go. When I play with a new distro, I 
> usually start by installing it on an external hard drive, so I can make sure 
> it plays well with others without having to destroy my current working setup. 
>  That's what I tried here.  I attempted to install it on a Western Digital 2 
> TB external portable drive.
> I downloaded the OS, created the installation flash drive, and chose the 
> external drive as the drive to install on.  It seemed to go fine.  No 
> warnings, no hangs.  I installed using the default partitioning, with the 
> exception that I resized the / directory to make it a little smaller and 
> added a vfat /data partition.
> When I rebooted and hit F12 for the boot sequence options, sure enough 
> "Qubes" was one of them.  Qubes *doesn't* show up in the boot options if it 
> gets to the grub boot list, that's still just neon and windows. But, if I use 
> the BIOS boot sequence, Qubes is an option.  
> I chose "Qubes" as the option, and it dumped me into a BIOS screen that said 
> it was checking the safety of hardware, which it apparently passed, but then 
> came up and said it couldn't boot (though I did not write down the exact 
> error message, unfortunately).  I rebooted again, did the boot sequence 
> thing, and it came up with a black screen with the options:
> "Press F1 to reboot"
> "Press F2 to reboot into setup"
> "Press F5 to run onboard diagnostics"
> And each button did exactly that.
> I then tried to boot on USB using legacy boot, but that came up with "no boot 
> device found."
> Booting into neon or windows still works fine.  I can mount the external 
> drive and see all the normal linux stuff that a distro should have.  I can 
> read and write to both the / and /data partitions on the drive with root 
> permissions.
> I tried changing usb ports, and that didn't do anything.  I tried installing 
> with and without disk encryption, and that didn't change anything except that 
> I couldn't mount the encrypted / partition in neon.
> Is this some problem with having a /boot/efi on the external drive *and* a 
> /boot/efi on the internal drive?  If so, why does it not work on an 
> installation but seems to work on the installation flash drive?
> Anybody have pointers to what I should try next? 
> Thanks!
> billo

aight, sorry I had to leave so abruptly on the previous post.

To answer your question directly, yes it's very possible to install on an 
external drive. I've even installed Qubes on a thumb-drive. Fun times, albeit 
it was a bit slow :')

It's really no different than normal install either, so whatever issue you 
have, is likely not involved in the settings of normal setup. It's probably 
more likely to be a bug, lack of hardware support, lack of kernel support, 
wrong UEFI/BIOS settings, wrong EFI/Grub settings, out-of-date UEFI/BIOS or 
buggy UEFI/BIOS which no update has been made available yet, and probably some 
other aspects I forgot to mention here, and I'm no expert either, so probably 
some things I don't know about too.

I would check if you can update your UEFI/BIOS in your current situation. Just 
be careful, you can brick your motherboard if the update process goes badly. 
Especially if its interrupted before its done (power-outage, system-freezes, 
user-choice-to-restart-when-not-supposed-to, etc.), wrong update-version 
(although most motherboards should detect if its wrong version, some might not 
though). If you encounter questions regarding UEFI/BIOS updating process, then 
definitely don't forward without getting solid answers first. Think twice, or 
better yet, triple, before you do something here, as it's a sensitive update 
with bad consequences by any mistakes or accidents. Not trying to spread 
scaremongering here, just underlying to be careful and knowing the risk before 
deciding. Also EFI paths or SecureBoot keys might be lost in an UEFI update, in 
case you have other OS's on the machine.

Also how far do you get with the LegacyBIOS/Grub install, do you encounter the 
initial Grub menu for the installer (and not the installed Qubes grub)? For 
example if you do, then it might be some missing Grub settings you need to 
adjust, for example some people have a graphic card driver which the installer 
does not work well with, which can be changed in the grub code by pressing the 
E key on the selected boot option. Xen might be using a different graphic 
driver, and thereby it can boot up the installer unlike Grub. This is one 
possibility, maybe it's another driver, another grub setting, or perhaps VT-d 

Did you enable VT-d in your UEFI/BIOS? Also make sure there isn't a second 
"Virtualization" to VT-d to enable, sometimes an extra one might hide, for 
example in "Advanced --> CPU" settings in the UEFI/BIOS. 

Sometimes other settings go wrong, like in your case, it might be that UEFI/EFI 
is not handling the USB correctly, disallowing you to install on the external 

Maybe LegacyBIOS/Grub handles it right, but you got other issues before that to 

It could also be the hand-off of USB drivers setting in UEFI? I'm actually not 
entirely sure how this one works. 

Alas, it's hard to say for sure what's wrong without some error codes/messages, 
even though I can't read code too well, others more knowledgeable than I might 
be able to. Although some errors I can read. Any chance you can post them here?

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