usb iso does not work with dd command
 

hello, I downloaded the 4mlinux iso and copied it to a pendrive with the dd command ... but it doesn't work, I also tried imagewriter from mabox linux and it can't copy it to a pendrive, it is the first linux distro that gives me this problem .

Please supply us with the command used and wrap that command in [code].

BTW, Welcome!

4mlinux

https://distrowatch.com/index-mobile.php?newsid=11601

https://sourceforge.net/projects/lin...h=/40.0/livecd

Compare checksum against what 4M says that it should be. If it is ok, find out what the device node for the usb drive:
You'll need to have the machines Bios or EFI setup set to boot from usb drive.

After you have done that, and booted from the live media, what errors are you getting.

Meaningless.

sudo dd if=/home/kevin/Scaricati/4MLinux-40.0-64bit.iso of=/dev/sdb bs=4M && sync

kevin@kevin-hp630notebookpc ~ $ dd if=/home/kevin/Scaricati/4MLinux-40.0-64bit.iso of=/dev/sdb bs=2048
551417+0 records in
551417+0 records out
1129302016 bytes (1,1 GB, 1,1 GiB) copied, 101,117 s, 11,2 MB/s

How does it fail? Did you turn off secure boot?

If you have installed kvm/qemu or virtualbox, you could test both the image and the pendrive by test booting it by mapping the DVD.

[QUOTE=elgrandeperro;6370930]How does it fail? Did you turn off secure boot?

no, how do i disable it? only 4mlinux does not start, sparkylinux, mabox, crunchbang all go, why?

if I open the file manager the pendrive with 4mlinux is seen as cdrom

Did you try a VM boot?

Just because it looks like a CD, doesn't make it bootable.

i have installed at least 40 distros on this notebook, 4mlinux does not start, i tried both with dd command and with etcher

If all of those worked using this method, then there is something different about this one.
#1 has it been formatted so that it SHOULD work? This is not a sure thing.
#2 Did you checksum the file (as was suggested) and compare the CRC values with the expected value to ensure you have a good ISO file download?
#3 did you verify that it is the image that matches your CPU architecture?
#4 have you tried copying it to a VENTOY device and test from that?

If it fails, there should be some error codes, messages, or fault behavior. These may not be easy to record during a direct hardware install, try installing into a virtual machine and record the messages and result.

url="https://sourceforge.net/projects/linux4m/files/40.0/livecd/4MLinux-40.0-64bit.iso/download" filesize="1129302016"><media:hash algo="md5">f6f9f92c443f626149691a3d36a09dc5</media:hash></media:content>
bash: errore di sintassi vicino al token non atteso "<"

md5sum /home/kevin/Scaricati/4MLinux-40.0-64bit.iso
f6f9f92c443f626149691a3d36a09dc5 /home/kevin/Scaricati/4MLinux-40.0-64bit.iso

when I start etcher to copy the iso on a pendrive it warns me that the iso is not bootable

Did you try the core ISO instead of 64-bit?

The 4MLinux-40.0-64bit.iso is not a hybrid ISO file and will not boot from USB. Download the hybrid ISO file here:

https://sourceforge.net/projects/linux4m/files/hybrid/

I downloaded that exact file using
and burned it to usb with dd. I then used it on my laptop to boot.

The boot failed because the image had an invalid signature and secure boot stopped it, but the image on that usb was UEFI bootable. I did not try a legacy boot. When I disabled secure boot it booted cleanly.

These are the checksums I got on that file.

I believe you but usually a hybrid ISO will have a DOS/MBR boot sector, a non-hybrid does not and a non-hybrid ISO should not be able to boot from USB.