[SOLVED] [ERROR] No Device with Valid ISO Found

[Ivan Gersi]

Solution is very simple...unplug usb during looking for ISO file and plug in again.
Working for every versions.

 

[spenceradolph]

Ventoy seems to have pushed an update that fixes this exactly!
https://github.com/ventoy/Ventoy/issues/2657#issuecomment-1838889979

 

[Ivan Gersi]

But this problem is older, from 7v (maybe 6v?).

 

[compumatter]

I noticed when testing devices it is lookin for /dev/sr0 which is a CDRom device even though I was using a USB and it should have been looking for /dev/sd(x) and that is why it never finds it. I burned 8.1 to a CD and it installed normally as it found the /dev/sr0 it was looking for

 

[plporter]

Hello, if you install the iso file to USB with the Balenaetcher Program, there is no problem. The Proxmox 8.1.1 installation was successful.

I tried via Ventoy like 8 times, even pulling out the drive.

balanaEtcher worked first time!

 

[game]

I met the same problem with 8.1.1 no matter using balenaEtcher or dd to write the iso to my usb disk on my mac.
Your method did work for me. Just registered this to thank you for sharing your trial

It works with balena. Thank you for sharing this solution with us.

 

[realfoodman]

I had this issue when booting from my Ventoy drive, but I updated Ventoy (just use the installer and it will ask to upgrade; it won't even erase the ISOs on the drive), and now it works fine.

 

[WOJCIECH]

I have been trying to install Proxmox (versions 6, 7, and 8. All the same results) on a DL380 G6 but can't get the install media to work. I get as far as selecting Install Proxmox VE. Console text comes up and i get

testing device '/dev/sr0' for ISO
testing device '/dev/sdc' for ISO
testing again in xxx seconds...
...

[ERROR] No device with valid ISO found, please check your installation medium.

I have flashed the usb drive with both Rufus (dd mode) and Etcher, but neither tools work
The only changes I have made to Grub is adding module_blacklist=radeonfb to the linux options to fix a graphical error where I would get an "Out of Range" error on multiple monitors and vga cables (which appears to be a long running issue that hasn't been fixed yet according to the bug tracker)

7.4 work fine, 8.1 does not. One machine, one USB stick. So there are something wrong with prepare instalation from ISO. unfortunelly I'had choice 7.4 for production, because 8.1 instalation did not start. I prepared multi iso stick by ventoy

 

[sawy3r]

Appears to be a ventoy issue, https://github.com/ventoy/Ventoy/issues/2657, several have reported updating ventoy will fix this.

This fixed it for me. Thank you very much!

 

[plporter]

I was having issues for about 6 full days trying everything I could come up with.

I remembered reading to not use a USB wireless keyboard or Mouse. So I tried a standard wired keyboard.

Often times after failing and typing:

# blkid

to show what drives were available, I noticed that when NOT using the wireless keyboard that once it errored out, I could not type on that wired keyboard.

My 2 PC's have a KVM with 4 USB ports to plug into. So I plugged the thumbdrive into the KVM and the installation took off without any errors.

Shockingly simple solution to a very stressful and long debugging effort.

 

[khampol]

change to dd

it's the key

 

[denesfreitas]

I was able to solve this with what is perhaps the dumbest solution:

When the installer does the "testing device" loop, unplug the install media then plug it back in. For some reason it worked. I do not know why. Grub is weird.

I came about this solution while trying to install Debian for the alternative install method mentioned above when I ran into a similar issue, however that time I decided to replug and see what would happen. Lo and behold Debian started installing. I got halfway through installing Debian before I made the connection and tried the same method with proxmox.

Hopefully this helps because i've seen a few other threads in google searches with the same issue.

Note: This was tried with the 8.x ISO. Idk if it will with any other versions but if it worked on two operating system installers then it should for any version of proxmox. GL HF.

Thank you.
I had the same problem and I did it according to your instructions and the installation started and completed successfully.
Installed version VE8.2

 

[misku]

I was able to solve this with what is perhaps the dumbest solution:

When the installer does the "testing device" loop, unplug the install media then plug it back in. For some reason it worked. I do not know why. Grub is weird.

I came about this solution while trying to install Debian for the alternative install method mentioned above when I ran into a similar issue, however that time I decided to replug and see what would happen. Lo and behold Debian started installing. I got halfway through installing Debian before I made the connection and tried the same method with proxmox.

Hopefully this helps because i've seen a few other threads in google searches with the same issue.

Note: This was tried with the 8.x ISO. Idk if it will with any other versions but if it worked on two operating system installers then it should for any version of proxmox. GL HF.

Thumbs up for the "re-plug workaround". It worked for me. Thank you!

 

[Andrei_W4TL]

Encountered the same Problem on PBS too. Re-pluging the device helped too.