Hello, Adding to my last message, an arch linux thumb drive also won't boot either. Where do I find the linux efivar and the efibootmgr commands? Thanks. Dave. On 2/23/19, David Mehler <dave.mehler@gmail.com> wrote:
Hello,
I had some unexpected sighted help last night and got secure boot off. For this machine the m5a97 motherboard the setting was in the uefi, advanced setup, boot tab, secure boot area. By default secure boot is on and can not be disabled. So, cleared secure boot keys, saved, and then secure boot was disabled. I then rebooted and rechecked uefi and confirmed secure boot is indeed still disabled. Hope that is of use to someone.
My problem still is now putting in a thumb drive, either a win10 created 1803 thumb drive, or a talking win PE in neither case will they boot. Any ideas on that?
Thanks. Dave.
On 2/23/19, Jason White <jason@jasonjgw.net> wrote:
The Linux efivar command will let you set the UEFI variables at a fairly low level. You can also use the efibootmgr command to change the boot order, and probably to add boot loaders too.
I needed to turn off Secure Boot recently to enable an Arch Linux installation on a laptop. The easiest solution was to call an Aira agent for assistance. I read somewhere that the Secure Boot setting can't be changed once the operating system is loaded; you have to do it from the firmware menu during the boot process. I can't verify this claim though. At least on my laptop (a Lenovo P51), you can also change the EFI variables within Windows using scripts available from the manufacturer's web site.
On 2/22/19, 13:39, "John G Heim" <jheim@math.wisc.edu> wrote:
I am not sure I am totally up on the latest technology. But my guess is
that you will probably have to get sighted assistance. About a year ago,
I poked around looking for linux tools that allowed you to access EUFI settings. I found nothing of significance.
There is some chance you could manage it with the KNFBReader iPhone app.
The KNFBReader app can read a computer screen. It does not do well with
console text. It does much better with black text on a white background.
I actually succeeded in changing a BIOS setting once but I used a PC Weasel card. So that is a card that looks like a VGA card to the system
but it actually gives you text output on a serial port. You can use a null-modem cable and a terminal emulator on a second machine to get to the console display. So what I did was to google for how to change the
setting and found a video where the person walked you through changing the setting. I could kind of follow along with which keys he was hitting and did the same thing. It worked. But there was probably devine
intervention. Every once in a while I look on Craig's List for one of those PC Weasel cards. They stopped making them years ago. It saved my
bacon many a time though.
It can be frustrating to get sighted assistance from someone who is not
tech savvy to do something like change a EUFI setting. Another thing I've done in the past is to pack the machine up, drag it to a used computer store, and offer them $5 to helpme. Actually, the last time I did something like that, I didn't set a price ahead of time and they dinged me for $20. Lots of times they'll do stuff like that for free though.
On 2/21/19 10:59 PM, David Mehler wrote:> Hello, > > I've had to do a new win10 install and somehow I must have cleared my > bios settings, had also to replace a power supply. The first clue came > after the machine was booted up again and wouldn't boot off of any USB > drive, so I checked system information, UEFI was back on as was secure > boot. I do not remember how I turned this off as I just did it once > and forgot about it. I do not like UEFI nor secure boot, although I > understand the purpose i'd rather be able to set my machine to boot > off an inserted USB thumb drive. > > The motherboard is an Asus m5a97 and the bios is an american megatrends. > > Suggestions welcome. > > Thanks. > Dave. > _______________________________________________ > Blind-sysadmins mailing list -- blind-sysadmins@lists.hodgsonfamily.org > To unsubscribe send an email to blind-sysadmins-leave@lists.hodgsonfamily.org > _______________________________________________ Blind-sysadmins mailing list -- blind-sysadmins@lists.hodgsonfamily.org To unsubscribe send an email to blind-sysadmins-leave@lists.hodgsonfamily.org