[syslinux] Question on memdisk with UEFI boot.

[Michael D. Setzer II]

On 13 Jan 2023 at 10:27, solarflow99 wrote:

From:	solarflow99 <solarflow99 at gmail.com>
Date sent:	Fri, 13 Jan 2023 10:27:03 -0800
Subject:	Re: [syslinux] Question on memdisk with UEFI boot.
To:	mikes at guam.net
Copies to:	syslinux at syslinux.org

> 
> Are you using memtest 6? This is what I use and it works fine in bios and efi 
> mode, notice i'm not using the whole ISO.
> 
> menuentry 'Memtest' {                                                                                                              
>  linux images/utils/memtest/memtest6.efi                                                                                                    
> }  
> 

Thanks for reply

https://www.memtest86.com/pricing.html
memtest 6 is a commerical product, and would not be 
legal for me to include with my project. I've know that it 
is available, but for $49 for a single license that could 
not be included.

https://memtest.org/ has a file but is an iso.
6193152  12-30-2022 17:00   mt86plus64.iso

Will have to see what it has? Don't see any UEFI option 
on that site?


> 
> 
> 
> On Fri, Jan 13, 2023 at 4:00 AM Michael D. Setzer II via Syslinux 
> <syslinux at syslinux.org> wrote:
> On Fedora machines I've gotten the memtest to work 
> using this:
> menuentry 'Memtest' {
>     echo 'Loading memdisk'
>     linux16 /memdisk iso
>     echo 'Loading iso'
>     initrd16 /memtest86+-5.31b.iso
> }
> 
> Recently tried doing it with a UEFI boot, but seems the 
> linux16 isn't supported, and probable not the initrd16 
> either. Trying to install the memtest-setup results in not 
> supported. 
> 
> Have generally included memtest as part of my G4L 
> project since on occassions machines with flaky memory 
> are strained with disk imaging. 
> 
> If booted from syslinux version with CD or USB setup, 
> the option works fine with regular memtest.
> LABEL memtest86-5.31b
>   MENU LABEL ^M: memtest86+-5.31b
>   TEXT HELP
>   Memory test Program to insure system Ram is Good
>   ENDTEXT
>   LINUX memtest
> 
> With grub4dos version that has both legacy and UEFI 
> boot options the earlier version with memdisk works 
> with legacy, but fails with UEFI boot.
> 
> Seems the free memtest doesn't work with UEFI, and 
> can't include the commerical one that does?
> 
> Just wondering. Took over maintaining G4L back in 2004 
> with it using syslinux and has been fine. Just had some 
> uses get machines that no longer support legacy boot 
> and required UEFI, so found grub4dos works for both on 
> same image. 
> 
> Thanks.
> 
> +------------------------------------------------------------+
> Michael D. Setzer II - Computer Science Instructor 
> (Retired)  
> 
> mailto:mikes at guam.net        
>       
> mailto:msetzerii at gmail.com
> Guam - Where America'
> s Day Begins            
> G4L Disk Imaging Project maintainer 
> http://sourceforge.net/projects/g4l/
> +------------------------------------------------------------+
> 
> 
> 
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+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor 
(Retired)     
 mailto:mikes at guam.net                            
 mailto:msetzerii at gmail.com
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+