> Sent: Monday, September 24, 2018 at 11:56 PM > From: "Michael van Elst" <mlel...@serpens.de> > To: netbsd-users@netbsd.org > Subject: Re: BSD disklabel partition letters in NetBSD >
[...] > The system always uses the disklabel Yes, IIUC the partition which hosts the NetBSD system always has a disklabel at its beginning. > only if none is written to disk, > a fictious label is generated from other data like an MBR. Sorry, I can't understand this. Maybe it's related to the following description: > The disklabel would be used and 'd' would still be the raw partition. > The disklabel would also be placed on sector 1. So, two disklabels in total. But what would be the contents of the disklabel in sector 1? > The raw partitition is always special. The extra 'c' partition on MBR > systems (where the raw partition is 'd') is just helpful but not > strictly needed. But it's still a good idea to not use it for anything > else. Yes, absolutely. > While it is possible to move root and swap and sometimes it comes handy > (e.g. to have an alternate root), the default and fallback is to use > 'a' and 'b'. Yes, of course, I was asking only to know if they are mandatory or not. > There is a build parameter MAXPARTITIONS, depending on platform it's 8,12 or > 16. > The maximum value for MAXPARTITIONS is MAXMAXPARTITIONS which is 22. Ok, good! > If you don't use disklabel but the wedge system, you get a device per > partitition, so there is no inherent limit. I guess you are talking about GPT again. Sorry for having added some questions and thank you for all your information. Rocky