Bug#658352: 4k Advanced format
at bottom :-
On Thu, Feb 2, 2012 at 19:04, Thomas Schmitt <scdbackup@gmx.net> wrote:
> Hi,
<snipped>
Getting a little sideways here :-
> I am clueless enough to look into wikipedia about GUID Partition Table.
> The is room for a "Protective MBR" of 512 bytes.
> So somebody would need to teach me how to announce the range of the
> ISO image and the range of the FAT partition in a GPT.
>
> Further one would have to discuss with Vladimir Serbinenko at grub-devel
> about the layout of the first 32 kB of the ISO image, where MBR, GPT,
> and GRUB2 code have to reside side-by-side.
I am curious to know how easy it is (or not) to have the newish
Advanced format [1] support in Debian-installer [2], as well as the
ext* filesystems [3]. I remember a story about it which came in
osnews[4] long-time back (around 1.5 years +) but do not really know
how relevant they are or not atm. I am asking as from what i read
alongwith the above at the very least the perception is most of the
changes being done are to take care of growth for the next 20 + years.
I also saw discussions on the linux kernel page [5] but that wiki
page is not current with the linux 3.x kernels. I did however spot an
article on lwn.net [6] .
Sadly there is no wiki entry about 'Advanced Format' on the Debian
wiki. It would be nice if somebody has some updated instructions for
it somewhere.
> Finally one would have to explore the chances to get Debian bootable
> ISO images onto GRUB2 rather than ISOLINUX.
>
> Then one would develop a friendly fork of grub-mkrescue as proof-of-concept
> of the various bootabilities in one single ISO image:
> - amd64 BIOS from CD
> - amd64 BISO from USB stick
> - amd64 UEFI from CD
> - amd64 UEFI from USB stick
> For this we'd need to enhance xorriso by GPT production.
>
>
> Alternatively one could find out how far SYSLINUX is with UEFI support.
>
> Or whether a ISOLINUX BIOS setup can be combined with a GRUB setup
> in a FAT partition. (ISOLINUX occupies no space in the first 32 kB of
> the image. So the GPT would have room there.)
>
> I assume this would be easier to integrate into the existing Debian
> image production.
>
>
> Have a nice day :)
>
> Thomas
1. https://en.wikipedia.org/wiki/Advanced_Format
2. https://en.wikipedia.org/wiki/Debian-installer ;
http://wiki.debian.org/DebianInstaller
3. http://wiki.debian.org/Ext4
4. http://www.osnews.com/story/22872/Linux_Not_Fully_Prepared_for_4096-Byte_Sector_Hard_Drives
5. https://ata.wiki.kernel.org/articles/a/t/a/ATA_4_KiB_sector_issues_d4b8.html
6. https://lwn.net/Articles/469805/
Looking forward to knowing more.
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Regards,
Shirish Agarwal शिरीष अग्रवाल
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