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