Accepted Solutions
Unless one is going to do a physical install and under normal circumstances one shouldn't have to burn an ISO Image to optical media to install it in a Virtual Machine and to do so arbitrarily to install in a VM is a bit senseless! 
Neither Darius or I have a problem installing from the ISO Image and by chinaski007's own admission has not bothered to validate against the published checksum so under the circumstances it's probably a corrupted image or User error of some sort.
Not to confuse this thread with your ISO issue however a URL for it would be nice because I find it quite interesting that if the image your burned to DVD was a validated ISO Image and would not boot from image but from optical media of that image I'd like to know where the fault lies as it certainly is an anomaly to the standard bootable image.
Tell us link to debian distro, I am going to check it on my PC.
Maybe you should select manually booting menu, was it F12 or F10 I believe it was
Regards, Lovly
chinaski007 wrote: did not make a checksum test. I believe the image is trustable.
If you can't be bothered to do as one is supposed to and validate a downloaded ISO Image against its published MD5/SHA1 checksum then I'm not going to waste my time trying to help!
Try burning the ISO to a R/W DVD (you can reuse it after installing Debian). In another thread (unanswered) I stated that I could not install CentOS from an ISO but could from a physical DVD This also has the advantage in recovering disk space if you are successful and can erase the ISO. While my head is pretty hard its not invulnerable to repeated self-inflicted blows
Unless one is going to do a physical install and under normal circumstances one shouldn't have to burn an ISO Image to optical media to install it in a Virtual Machine and to do so arbitrarily to install in a VM is a bit senseless! Neither Darius or I have a problem installing from the ISO Image and by chinaski007's own admission has not bothered to validate against the published checksum so under the circumstances it's probably a corrupted image or User error of some sort.
Not to confuse this thread with your ISO issue however a URL for it would be nice because I find it quite interesting that if the image your burned to DVD was a validated ISO Image and would not boot from image but from optical media of that image I'd like to know where the fault lies as it certainly is an anomaly to the standard bootable image.
I've installed many versions of CentOS from .iso images without any problems (and a few versions with problems ). Is there a particular version or configuration you're encountering trouble with?
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Darius
mfelker wrote: Can't tell if you are replying to me.
Yes I was replying to your post as evident by the "(in response to mfelker)" on the reply!
I only said to consider burning the ISO to an optical drive because on occasions that has helped some people even if not normally needed.
I stand firm by my comments on this issue!
BTW I still would like to know if you or anyibodyelse has succeeded to install CentOS from an ISO. Have you tried it??
I have no problem installing any Linux Distro from ISO Image including CentOS. Also regardless of how I download an ISO Image I always validate its checksum before using it. Checksums are published for very good and valid reasons!
mfelker wrote: On occassion after I install an OS in a VM I may wish to install it on thke host. I suppose there could be a way to do that directly from the ISO but have a diks is muchi easier for me at least.
If you want to do a physical install then burning an ISO Image to optical media is necessary however, under normal circumstances it just is not necessary to burn an ISO Image to optical media to do a virtual install. Additionally to do so is an utter waste of time not only because one would have to take the time to unnecessaraly burn it to optical media, it also takes considerably longer to install from optical media then directly from an ISO Image!
In all the years I've been doing this there are basically 3 primary reasons why one has trouble booting from an ISO Image, the least of which the image is not bootable and or quite often the CD/DVD is not set to be connected and or probably the most often reason is a corrupted download despite however it was downloaded saying it was successful (even if by omission) and in fact it wasn't and the User didn't validate the checksum. Additionally in the case of the latter I find once in a while the User is combative or resistive to preforming the checksum and eventually they come back and admit it was corrupted. It is probably ignorance induced fear of not knowing and or understanding how to preform the checksum along with the use of a Command Prompt/Terminal.