<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css">body p { margin-bottom: 0cm; margin-top: 0pt; } </style>
</head>
<body bidimailui-charset-is-forced="true">
<br>
<div class="moz-cite-prefix">On 29/04/2020 11:50, Gabor Szabo wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CABe4FJCYMBVNoYbPqRGCt6d01meNgOm2YDJmOd8Ty-3zx-D4Bg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div>Thanks for the quick reply, at least I don't feel totally
alone in this!</div>
</div>
</blockquote>
<p>Alone?</p>
<p><br>
</p>
<p>At work, we've had Asus laptops that we installed with Linux that
started only agreeing to boot once every 4 to 100 tries. We've had
a co-worker literally sit for one hour just trying to start his
computer.</p>
<p><br>
</p>
<p>We returned one of them, and the store kept it for 10 months
(!!!!) until Asus released a BIOS upgrade that solved the problem.
And then the store owner had the gall to try and bring us back the
(almost brand new when it was returned) laptop.</p>
<p><br>
</p>
<p>All further laptops we bought were Dell.<br>
</p>
<blockquote type="cite"
cite="mid:CABe4FJCYMBVNoYbPqRGCt6d01meNgOm2YDJmOd8Ty-3zx-D4Bg@mail.gmail.com">
<div dir="ltr"><br>
<div class="gmail_quote">
<div>The BIOS does not even have an option to boot into
Windows any more.<br>
</div>
</div>
</div>
</blockquote>
That's a completely different problem. Something deleted the Windows
UEFI entry from the BIOS. I'm not sure how to restore it (probably
boot a Windows recovery disk).<br>
<blockquote type="cite"
cite="mid:CABe4FJCYMBVNoYbPqRGCt6d01meNgOm2YDJmOd8Ty-3zx-D4Bg@mail.gmail.com">
<div dir="ltr">
<div class="gmail_quote">
<div><br>
</div>
<div>Linux gets to the grub> prompt and I don't know
how to proceed from there.</div>
<div>It does not show a grub menu.<br>
</div>
</div>
</div>
</blockquote>
Yes, that is strange, but of all problems you describe, probably the
least strange. I wouldn't start with this issue. If pushed, try to
see if secure boot is enabled. If Linux was originally installed
without placing signing keys in the BIOS (or those keys were deleted
by the upgrade), weird things are _expected_ to happen.<br>
<blockquote type="cite"
cite="mid:CABe4FJCYMBVNoYbPqRGCt6d01meNgOm2YDJmOd8Ty-3zx-D4Bg@mail.gmail.com">
<div dir="ltr">
<div class="gmail_quote">
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p> </p>
<p>What I don't understand is why your Windows would stop
booting. At the very least, it should start the boot
process and BSoD when the disk drivers have changed for
it.</p>
</div>
</blockquote>
<div><br>
</div>
<div>My understanding stop at the point why would the bios
flashing make the Windows entry disappear from the list of
boot options.<br>
</div>
</div>
</div>
</blockquote>
UEFI boot sequence starts at the BIOS. Unlike the legacy sequence,
where the BIOS would unconditionally load the boot loader, and any
boot selection you want to do is done after the BIOS has finished,
UEFI needs the <br>
<blockquote type="cite"
cite="mid:CABe4FJCYMBVNoYbPqRGCt6d01meNgOm2YDJmOd8Ty-3zx-D4Bg@mail.gmail.com">
<div dir="ltr">
<div class="gmail_quote">
<div><br>
</div>
<div>Gabor <br>
</div>
</div>
</div>
</blockquote>
</body>
</html>