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Cant install Ubuntu 20.04

cn flag

I'm trying to install Ubuntu 20.04 as a dual-boot with windows 10 on an Acer Extensa 2508 laptop (circa 2015). I disabled secure boot in the bios, and shrank my main Windows 10 partition to allow ~ 200GB for Ubuntu (it's a traditional HDD). I created a bootable Ubuntu USB pen drive with Rufus.

The installation goes fine until I get to the step where it says "to finish installation, remove installation media and press 'reset'". When I press 'reset' and remove the bootable USB pen drive, the machine boots into Windows 10. I tried installing Ubuntu twice, and the same thing happened both times.

Any help would be greatly appreciated.

Thanks a lot in advance.

ChanganAuto avatar
us flag
Fir4st thing to check is obviously the boot order. Open UEFI settings > Boot and assure "Ubuntu" has the boot priority. Some Acer models require additional steps.
user2676187 avatar
cn flag
Thanks for replying. When I go into the bios the boot order show only the devices -- no mention of either Ubuntu or windows 10. I obviously had set the boot order to be USB HDD first, since that's where the Ubuntu installation is booting from. Any ideas ? Thanks again for responding :-)
ChanganAuto avatar
us flag
A laptop from 2015 is UEFI so you must have enabled Legacy/CSM.
user2676187 avatar
cn flag
Thanks. Forgive my ignorance -- I'm kind of a newbie. I don't remember anywhere in the bios where there was an option to enable/disable Legacy/CSM.
ChanganAuto avatar
us flag
Let's see details instead of guessing: https://help.ubuntu.com/community/Boot-Repair Use the 2nd option to install it in a live session (the same USB you used to install is fine), create a bootinfo summary and post it here. Do NOT apply any repair before we take a look at it.
user2676187 avatar
cn flag
Thanks a lot ! I'll do this tomorrow, and then post the results here. :-)
user2676187 avatar
cn flag
Hi Here's the url for the boot info summary (I assume you don't me to post the whole thig here).
user2676187 avatar
cn flag
Here it is: https://pastebin.ubuntu.com/p/wjtRxygSGd/
user2676187 avatar
cn flag
Thanks for everything
ChanganAuto avatar
us flag
Actually you're supposed to update the question by editing it and adding the URL :)
ChanganAuto avatar
us flag
So, after reviewing the report, we're back to the beginning of this stream of comments. Everything looks good for a proper dual-boot in UEFI mode, everything checks out except the boot order. Again, you should check the option in the Boot menu where indeed you should find one setting for the order of drives (that's one thing) and another for the actual OS or OSes installed (that's another). That said, some Acer model require additional steps as outlined in https://askubuntu.com/a/886561/1210606 <- Not everything here is necessarily correct but the part about "trust" rings a bell.
user2676187 avatar
cn flag
Thanks for the link. There's nowhere in my bios (it's set as UEFI not legacy) where I can either 'Select an UEFI file as trusted for executing' nor is there any HDD0 > EFI > 'ubuntu' menu. Maybe my system can't dual boot ? Thanks a lot again
ChanganAuto avatar
us flag
Your system *can* dual-boot but, again, it may need to be set to trust any OS other than Windows. That was just an example from a quick google search. You may need to start by setting a supervisor password (NEVER loose it!) to then have additional options. I can't help you further and what I mentioned I've learned right here, I don't have personal experience with such Acer models.
user2676187 avatar
cn flag
Ok thanks. I've already set a supervisor pw and a user pw, The only think left to try is a hdd pw, which the bios has as frozen. I'll keep searching google. Thanks again for everything.
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