On 23/06/2025 at 17:13, john doe wrote:
when I select "Install with speech synthesis": - Invalid magic number - You need to load the kernel first , press any key to continue - PNG: not a png file
GRUB says vmlinuz is not a valid kernel image and the background image file is not a valid PNG file. This really looks like a corrupted installation media.
I did a cp command (`cp <SRC> <DEST>`) to copy the iso onto a USB key.
Was any filesystem on the USB key mounted during the copy ? This can cause data corruption.
I'll reformat the USB key and use the dd CMD to give it an other shot and maybe fire up a VM to confirm that the image is not corrupted.
No need to use dd, cp should work fine assuming that the USB key is not in use.
Just in case there was an issue during the download, here's the sha512 checksum:
(...)
We have a checksum match! ;^)
With the ISO image or the USB key ? If with the ISO image, you can compare it with the USB key contents :
cmp image.iso /dev/usbkey(It is almost the same command as for the copy with cp, I use them both in a row) If there is no difference it should exit with a message saying it reached the end of the ISO image.