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On Thursday 27 Aug 2015 19:31:34 Fernando Rodriguez wrote: |
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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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> > |
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> > wrote: |
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> > > > Le 2015-08-26 13:37, Fernando Rodriguez a écrit : |
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> > > >> This may not be complete and some of these may be possible to some |
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> |
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> extent |
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> |
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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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> |
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> grub- |
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> |
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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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> |
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> model |
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> |
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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) |
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> > > >> is 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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> > > > I've had serious problems in the past getting to to install on a |
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> |
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> partition |
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> |
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> > > > and gave up. Is that bug fixed? It insists on installing on the MBR |
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> > > > which |
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> > |
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> > is |
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> > |
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> > > > unacceptable. |
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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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> > 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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> |
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> installed |
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> |
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> > in this setup by using blocklists. However, blocklists are UNRELIABLE |
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> > and 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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> |
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> with |
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> |
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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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> |
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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 |
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> problems. |
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|
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You beat me to it. Yes GRUB2 can be installed on a partition instead of the |
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MBR and yes it complains about it. However, it works regardless. I have done |
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it a couple of times so far, just as you describe above. In my case I |
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chainload GRUB2 with NTLDR or modern equivalent and this is how I know that |
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the MBR was not being overwritten by it. |
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|
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-- |
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Regards, |
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Mick |
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