On 12/18/2013 04:09 PM, akhiezer wrote: >> Date: Wed, 18 Dec 2013 16:00:11 -0600 >> From: Dan McGhee <beesn...@grm.net> >> To: LFS Support List <lfs-support@linuxfromscratch.org> >> Subject: Re: [lfs-support] LFS 7.4 - Chapter 8.4 - GRUB >> >> [...] But, AFIK, the user must *make* >> the partition behave with the GUID's. [...] > > Not quite sure what you're meaning there, Dan - apols if/that am being dense: > elab if poss? (No probs of course if not.) No prob anywhere.
> [...] But, again AFIK, if the firmware > is MBR based, you're still limited to four primaries. > > IIUYC: no; e.g. got an old (a testing-machine) p4 on a supermicro p4spa+ (or > sim) mainboard, running modern blfs/slack1337, with disks partitioned with > GPT and each disk has ~16 partitions. No non-/pre-GPT stuff in sight, no > UEFI stuff in sight, and all goes just fine. This is what I meant. The user needs a gpt capable partitioning tool to *make it so* on an "older" machine. > And, again IIUYC re 'primaries': no such concept in GPT, at least not in > pre-GPT sense; and in pre-GPT sense, yes, the spec only allows for 4 primaries > anyhow. This is another source of misunderstanding. May be too strong a word. It's all vocabulary. MSDOS MBR's don't have the "bit length" to physically support more than what is know as a "primary," as opposed to "extended" partition. I don't have a "pdf reader" set up on my new LFS yet so I can't refer to an article I'm thinking of. But if I remember, the "old" MBR is 16 bit. The UEFI bios firmware is 128 bit. There, of course, is a limit to the number of partitions, but it's large. :) I find this subject fascinating, but until I get my new system where I want it, I'm hampered by jumping back and forth between Ubuntu and LFS. So I'm just still building until then. Thanks for responding akh, you've provided me with some more precision in my ability to talk about this. Dan -- http://linuxfromscratch.org/mailman/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/lfs/faq.html Unsubscribe: See the above information page
