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I remember reading that thread too.

Ventoy stick booted, Secure Boot off, Chimaera netinstall started in efi mode.

When the partitioning is started and waits for the method to partition, Alt-F2 to the 2nd console, mount tells me:
rootfs, tmpfs, sysfs, devtmpfs, devpts, and then the interesting things:
/dev/sde2 on /cdrom type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048,iocharset=utf8) 
none on /sys/firmware/efi/efivars type efivarfs (rw,relatime)

As mentioned in the private mail: I only had problems when skipping the topic "Loading additional modules" in the expert installer mode. I have got full choice, I am using manual partitioning and I am encrypting all my installations (with very few exceptions in a VM).

Hope that helps.

Hi Ralph,

my Ventoy stick is shown as this:

# fdisk -l /dev/sdg
Disk /dev/sdg: 114,61 GiB, 123060879360 bytes, 240353280 sectors
Disk model:  SanDisk 3.2Gen1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xf078671f

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sdg1  *         2048 240287743 240285696 114,6G  7 HPFS/NTFS/exFAT
/dev/sdg2       240287744 240353279     65536    32M ef EFI (FAT-12/16/32)

I can boot the older Devuan releases as well in efi as in legacy mode and install them from the boot of the iso, the first language selection dialogue until the final eject media, they are fully installed afterwards. No limits.

For sure remove the AMD Catalyst driver completely. Its outdated and useless.

Maybe you simply do a re-installation. If recklesswing is right support by the kernel is enough. Nevertheless, on first boot watch out for messages about missing firmware. If such messages appear, add non-free-firmware to your sources.list, do an apt update and install firmware-amd-graphics. I have got 5800 cards that require firmware.

PS: you say you got that card working on Debian Bookworm? Then there is no reason why it shouldn't work in Daedalus. Uses the same packages as Bookworm.

How is that card listed by lspci?

Is this your first Daedalus installation? The fsmithreds suggestion is very relevant.

AMD cards are normally fully supported by kernel and firmware-amd-graphics.

Devuan Daedalus is not compatible to Ventoy. Does not work.

Use dd or cp to write the image to an empty stick, that works fine.

Forget about this idea. This was promoted for a while by Intel, they also had a product for that, and Seagate also had some hard disks with SSD cache on board in the portfolio, but never was really adopted in a bigger scale. This is sort of dead by now.

If Debian does Devuan should also do. Devuan is Debian - systemd packages + replacements. Kernel and drivers are the same.

You obviously did not read nor understand the page I linked.

1.) Do not use the Devuan root server http://pkgmaster.devuan.org in your sources.list. This puts heavy load onto the master server.
2.) Use http://deb.devuan.org/merged and if that gives you not resolved or something similar, you might try:
3.) Use http://de.deb.devuan.org/merged as example for Germany. de. is the country prefix. If you are living in one of the worlds bigger countries, this migth be an option. Warning: I did use the de. option for a while some years ago, then it became a problem. I am back to 2.) with minimum hasle.
3.) Brr, the mirror_list.txt has been converted from an easy human readable format to the new Debian standard called DEB882 which is better readable by machines. Last but not least you might use this example: http://ftp.fau.de/merged using the mirror ftp.fau.de from Germany. Adapt to your needs.

There is a link to devuan.org on the top of the forum page. There you find a lot of useful information.

Try this page first: https://www.devuan.org/os/packages

The screenshots you are showing here try to access beowulf which is Devuan 3. Daedalus is Devuan 5. You need to upgrade to Chimaera = Devuan 4 first and then to Devuan 5.

Edit /etc/apt/sources.list and replace beowulf with chimaera as a first step. I hope you are familiar with nano?

BTW: looks like there is an additional problem with resolving deb.devuan.org. There are several posts in the forum about this issue and hints how to resolve.

Nothing should be commented out in a Daedalus sources.list, it isn't neccessary. It should look like this:

deb http://deb.devuan.org/merged/ daedalus main contrib non-free non-free-firmware
deb http://deb.devuan.org/merged/ daedalus-security main contrib non-free non-free-firmware
deb http://deb.devuan.org/merged/ daedalus-updates main contrib non-free
deb http://deb.devuan.org/merged/ daedalus-backports main contrib non-free non-free-firmware

I am using the recommended default. It works to about 99.9% for me. If you run into problems, replace deb.devuan.org with a suitable mirror.

I am pretty sure dedicated install scripts for Debian will fail when they read a Daedalus sources.list. None of them will consider Devuan and like, they are written for stock Debian. No Devuan problem in itself. You have to do the installation manually. Read the instructions on the web pages and adapt the descriptions to Devuan Daedalus.

I run the Firefox ESR from the Mozilla website directly. Nowadays there is a deb package also.