Package: grub-efi-amd64 Version: 2.06-13 Severity: important I have encountered a situation where grub-efi-amd64 reports
error: out of memory in the pre-boot environment despite the system having an adequate amount of RAM (8 GB). This occurs when attempting to load an ISO9660 image file via loopback, e.g. loopback loop /path/to/debian-live-11.2.0-amd64-standard.iso (note that this ISO file is ~1 GB in size) This issue is easily reproducible in VirtualBox with an EFI-based VM. I do notice that a somewhat smaller ISO (systemrescue-10.01-amd64.iso, ~740 MB) is able to be loaded via loopback and booted. Also, this issue does NOT occur on grub-pc with an equally-spec'ed BIOS-based VM; that one can boot the same ISO file just fine. This issue appears to match the following one from the Ubuntu side: https://bugs.launchpad.net/bugs/1842320 That one revolved more around loading larger initrd files, which prevented some users' installed systems from booting. The issue was resolved earlier this year, so assuming it is the same as this one, a fix should be readily available. -- Daniel Richard G. || sk...@iskunk.org My ASCII-art .sig got a bad case of Times New Roman.