Re: [SPECIFICATION RFC] The firmware and bootloader log specification

2020-11-15 Thread James Courtier-Dutton
On Sat, 14 Nov 2020 at 12:37, Nico Huber wrote: > > (I think > > newer spec versions should not change anything in first 5 bf_log > members; > > this way older log parsers will be able to traverse/copy all logs > regardless > > of version used in one log or another), > > Good point, w

RE: RE : Full Disk Encryption (including

2012-10-27 Thread James Courtier-Dutton
> > Once again, thanks for any help. Pardon any newbie mistakes I may be making. It's a learning experience for me and I am hoping this would be a good exercise in understanding how it all works. > my guess is this is one of two things: 1) the initramfs does not have the correct usb drivers to see

Encrypted boot partition

2010-07-18 Thread James Courtier-Dutton
Hi, Is there any encryption support in grub? I would like to encrypt the boot partition, and let someone type the password into the grub boot screens. So, one would then get: 1) Switch PC on. 2) Type in password 3) Grub Boot menu. The reason to encrypt the boot partition is to make tampering mor

grub2 problems

2009-10-25 Thread James Courtier-Dutton
Hi, What is the dependancy of the grub boot loader and the grub.cfg file. I had a perfectly working grub2 install. I changed my grub.cfg file, assuming that grub would automatically use the new one, but grub failed to boot showing massed of errors in the grub.cfg file it saw. This was fixed by re-

Re: Handling multiple cores by GRUB

2009-10-15 Thread James Courtier-Dutton
2009/10/14 Robert Millan : > But I don't think this would be desireable except in very specific situations, > and I'm not sure which ones.  Perhaps loading a compressed file would be an > example (so that uncompression and disk poll can be done in parallel). > Not specifically related, but why is

Re: 16-bit bootloader support?

2009-10-09 Thread James Courtier-Dutton
2009/10/7 Gabe Black : > > So I have a real-time OS named Pharlap that has a 16-bit bootloader that > ends up switching to 32-bit protected mode and loads the OS.  I think it > relies on the first sector of the partition being loaded and execution > simply started - but in real-mode. > > Is there a

Re: Faulty BIOS or GRUB issue (USB Stick won't boot)

2009-10-01 Thread James Courtier-Dutton
2009/9/30 Daniel Mierswa : > On 30.09.2009 10:26, James Courtier-Dutton wrote: >> >> Can you do a >> fdisk -u -l /dev/sdb > > But of course. > > Disk /dev/usb1: 1041 MB, 1041961984 bytes > 33 heads, 61 sectors/track, 1010 cylinders, total 2035082 sectors >

Re: Faulty BIOS or GRUB issue (USB Stick won't boot)

2009-09-30 Thread James Courtier-Dutton
2009/9/30 Daniel Mierswa : > Hey list, > in January this year I got my hands dirty with a laptop and tried booting it > via USB stick. The thing is that, when installed to the MBR of the stick, > the BIOS just won't detect it and print "Operating system not found" and > skips to reading the MBR fro

Re: Protection of boot sector and embedded area

2009-09-27 Thread James Courtier-Dutton
2009/9/27 Michal Suchanek : > > Obviously your encryption solution does not encrypt the linux volume > which you boot using the USB stick so it has no reason to be loaded > when loading Linux, it can only cause harm by trying to decrypt what > is not encrypted. You make a assumption that the encryp

Re: Protection of boot sector and embedded area

2009-09-26 Thread James Courtier-Dutton
2009/9/26 Vladimir 'phcoder' Serbinenko : > James Courtier-Dutton wrote: >> 2009/9/26 Vladimir 'phcoder' Serbinenko : >> >>> It's generally a bad idea to chase grub out of MBR+embed area. It often >>> results in unreliable configuratio

Re: Protection of boot sector and embedded area

2009-09-26 Thread James Courtier-Dutton
2009/9/26 Vladimir 'phcoder' Serbinenko : > It's generally a bad idea to chase grub out of MBR+embed area. It often > results in unreliable configurations. Could you detail your usecase so > we can seek for a bettere solution? The other thing sitting in the embedded area is a whole disc encryption

Re: Protection of boot sector and embedded area

2009-09-26 Thread James Courtier-Dutton
2009/9/26 Colin Watson : > > In any case, run 'sudo dpkg-reconfigure grub-pc' and make sure no > devices are selected for the "GRUB install devices:" question. > Thank you. Just out of interest, where is the answer to that question stored? Just to clarify, by selecting "no devices", grub boot secto

Re: Protection of boot sector and embedded area

2009-09-26 Thread James Courtier-Dutton
2009/9/26 Colin Watson : > On Sat, Sep 26, 2009 at 09:28:12AM +0100, James Courtier-Dutton wrote: >> Is there a setting for grub-install/grub-setup where, if set, will >> never actually over write the boot sector and embedded area of my HD? >> I don't mind grub.conf being

Protection of boot sector and embedded area

2009-09-26 Thread James Courtier-Dutton
Hi Is there a setting for grub-install/grub-setup where, if set, will never actually over write the boot sector and embedded area of my HD? I don't mind grub.conf being written to, I just do not want the boot up executables written to. For example, if I have an Ubuntu install, and the grub package

Re: 16bit x86 assembler/disassembler

2009-09-25 Thread James Courtier-Dutton
2009/9/25 Seth Goldberg : > Hi, > >  gas supports 16-bit code with .code16 directives.  What are you trying to > do? > I would like to have some .c code, compile it into 16-bit x86 code. I then want to look at the resulting 16-bit x86 code with a disassembler. ___

16bit x86 assembler/disassembler

2009-09-25 Thread James Courtier-Dutton
Hi, Where is a 16bit x86 assembler/disassembler I am assuming that one is using one for grub. Does it do C to 16bit x86 code? Kind Regards James ___ Grub-devel mailing list Grub-devel@gnu.org http://lists.gnu.org/mailman/listinfo/grub-devel

Re: Save boot record before writing to the dest_drive

2009-09-22 Thread James Courtier-Dutton
2009/9/22 Lars Nooden : > James Courtier-Dutton wrote: >> I think this would be a good feature, because if nothing else, I >> permits the user to "uninstall grub" if they so wish. > > I would disagree with the use case described, but agree that having the > ab

Save boot record before writing to the dest_drive

2009-09-22 Thread James Courtier-Dutton
Hi, I think this would be a good feature, because if nothing else, I permits the user to "uninstall grub" if they so wish. So, if a user has installed Linux, so that their system now dual boots Windows and Linux, and they then decide to uninstall Linux and return to a Windows only setup. It should

grub core size

2009-09-22 Thread James Courtier-Dutton
Hi, I am using grub 2. The stage 1 bit of grub, that stores itself in the partition table and the following sectors, seems to be quite large. I have a HP server system that only has 32 512-bytes sectors free before the first partition but the grub core does not fit in there. It seems to need more