On 2022-06-29, at 16:59:48, Massimo S. wrote:

Hi all,

i'm having this experience
if i give more than 3GB ram (eg. 3,5GB) to an AOS (503) VM
sometimes Vbox go into "guru meditation" on this VM
but a ram shortage on the host is not possibile since it run 24GB
and have a lot of free GB

anyone had similar issues?

massimo

I have never tried more than 1.5 GB in a VBox guest, but VBox may think that 3.5 GB is not usable by the guest (doesn't mean that it is right). Try 2 GB, and get it installed, and working. Then, try increasing the memory (which is likely a total waste of time anyway).