Re: 'no mountable file systems' error upon attempted installation of Debian 10.7.0 amd64 dmg

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

of course the advise is correct to download the Debian installation
image and to put it plainly onto a USB stick (or to burn it onto
a DVD).

But:

LuKaRo wrote:
> Mac OS is not able to open it, as it does not really support other
> file systems than the Apple ones.

That's a bit hard to believe. ISO 9660 is a widely supported exchange
format. (Your mileage may vary with files >= GiB, though.)

  https://osxdaily.com/2008/04/22/easily-mount-an-iso-in-mac-os-x/
  https://www.top-password.com/blog/open-and-mount-iso-file-on-mac-os-x/


I further wonder about the "dmg" in the title of this thread.
How much is this old wiki page relevant ?
  https://wiki.debian.org/InstallingDebianOn/Apple/MacBookAir/3-2
It prescribes to use MacOS tool hdiutil to convert the .iso to a different
type of image which then gets copied onto the USB stick.

This seems to stem from an Ubuntu page of 2013:
  https://help.ubuntu.com/community/How%20to%20install%20Ubuntu%20on%20MacBook%20using%20USB%20Stick


absurdlapse wrote originally:
> ... > I am on a 2020 iMac running macOS Catalina

Has such a conversion been applied to the downloaded ISO ?

I would expect that the EFI equipment of an unconverted Debian ISO boots
from an USB stick on such a machine.


Have a nice day :)

Thomas