On Thursday, August 27, 2015 2:23:56 PM Fernando Rodriguez wrote: > On Thursday, August 27, 2015 8:49:13 AM Mike Gilbert wrote: > > On Wed, Aug 26, 2015 at 6:27 PM, Michel Catudal <mcatu...@comcast.net> > wrote: > > > Le 2015-08-26 13:37, Fernando Rodriguez a écrit : > > > > > >> This may not be complete and some of these may be possible to some extent > > >> with > > >> legacy grub: > > >> > > >> 1. Grub Legacy is 32-bit only, so you need 32-bit libraries or use grub- > > >> static. Grub2 is portable, even beyond Intel architectures. > > >> 2. Grub2 has been rewritten to be modular. Instead of Grub's stages model > > >> it > > >> uses a core image and a bunch of modules. > > >> 3. EFI support without chainloading or other hacks. > > >> 4. Better filesystem support. Including loopback devices. > > >> 5. Graphics and theming support. > > >> 6. Grub2's config file (the one it tells you not to edit manually) is > > >> scriptable > > >> using a shell-like script language. > > >> 7. Password support for each entry. > > >> > > >> > > > > > > I've had serious problems in the past getting to to install on a partition > > > and gave up. Is that bug fixed? It insists on installing on the MBR which > is > > > unacceptable. > > > > > > > It's not a bug, and it won't be "fixed". Installing on a partition is > > simply not supported. > > > > I just got it to work with these steps: > > 1. Mount the partition to /mnt/usb > 2. Run: > > #grub2-install --directory /usr/lib/grub/i386-pc --boot- > directory=/mnt/usb/boot --force /dev/sdb2 > Installing for i386-pc platform. > grub2-install: warning: File system `ext2' doesn't support embedding. > grub2-install: warning: Embedding is not possible. GRUB can only be installed > in this setup by using blocklists. However, blocklists are UNRELIABLE and > their use is discouraged.. > Installation finished. No error reported. > > 3. Set the partition as active with fdisk. > > And it booted. To verify that it didn't overwrite the mbr I overwrote it with > syslinux's mbr as follows: > > sudo dd conv=notrunc bs=440 count=1 if=/usr/share/syslinux/mbr.bin of=/dev/sdb > > Still boots!
It is a good idea to make all grub2 files in /boot immutable to avoid problems. -- Fernando Rodriguez
