Adam Wilson a écrit : > On Sun, 20 Mar 2016 12:51:56 +0100 > Pascal Hambourg <pas...@plouf.fr.eu.org> wrote: > >> Did you try to boot a non-EFI capable USB boot media, such as a Debian >> live image or a Debian installation image with the EFI partition >> deleted ?
(I guess that just changing the EFI partition type ID to "00" (empty) should do the trick too). > No. That did not occur to me; I assumed it would then refuse to boot at > all. I shall try this out and get back to you. Thanks. > And I don't like / don't need either GPT, LVM, or logical volumes! Four > primary partitions has always been enough for me. Lucky you... >> I have seen this display problem with the EFI framebuffer driver in >> Wheezy's kernel on some machines. Installing with a serial console >> worked. > > How does one do that? First, the computer must have a serial (RS232 UART) interface. I guess it must be an internal one which may be quite rare these days, not a USB-serial adapter. You must connect it to a serial console (with a straight serial cable) or another computer (with a crossed serial cable) running a serial console emulator such as putty, picocom... Finally you must pass some parameters on the linux command line in GRUB. These are mentionned in the installation manual. There are a coupe of drawback, though : the installer through the serial console is available only in black&white and english, and after the installation, only the serial console is enabled. At least that was true in Wheezy, and enabling the virtual consoles tty1-6 in /etc/inittab was easy. I don't know about Jessie and systemd. >>> USB can still >>> only be booted from UEFI, but newer d-i means that installation now >>> proceeds as normal until the point at which UEFI yes/no >>> (force/leave) selection is reached >> >> I don't remember seeing this option in Jessie's installer when booted >> in EFI mode. How is it labeled exactly ? At what stage is it >> proposed ? > > It isn't something I saw either until my first UEFI installation media > boot- it may have been triggered by the fact that I was using 'Launch > CSM' Legacy mode so that I wouldn't have to bother with GPT/UEFI and > could use something resembling traditional BIOS and MBR. I don't remember seeing it even in my latest EFI installations. > It is in between the tasksel stage and the GRUB installation stage. A > prompt appeared telling me that I could either 'Force UEFI' for the > operating system installation, and have Jessie configured to boot from > UEFI, or not. It detected the fact that I had booted from UEFI but my > system was capable of either booting method. Thanks, I'll double check that during my next installation.
