On Tue, 23 Nov 2010 22:10:03 +0100, Mick wrote about Re: [gentoo-user] Boot partitions (WAS: migrating disks (from mounts to disklabels:
>On Tuesday 23 November 2010 17:18:56 David W Noon wrote: [snip] >> The number of primary/extended partitions is limited to 4, and the >> number of logical drives is limited by the size of the extended >> partition. If you can fit more partitions onto one drive than >> another, it is because either the drive is bigger or the partitions >> are smaller. > >Errm, not exactly. SCSI/SATAs are limited to 15 (inc. one extended >partition) and old (legacy driven) IDEs are limited to some 63 >partitions if I recall correctly. If you use the new libata I think >you only get 15 partitions for SATA/PATA. Well that's a software limitation. I am a little surprised that the limit is so small, as Windows can support 24 drive letters (C: through Z:) assigned to hard drive partitions. Of course, accessing the CD-ROM would then be a bit sporty under Windows. Request an upgrade to the SCSI disk driver. >I know, because I remember some years ago getting a bit >over-enthusiastic with a new SATA drive and fdisk only to end up with >partitions that I couldn't mount ... O_o Like I said, a software limitation. The old PATA drivers had their own internal driver for hard drives. Clearly, it did a more extensive scan of the partition tables than the SCSI driver. For me, it is no problem, because most of my mountable "partitions" are in fact LVM2 logical volumes. -- Regards, Dave [RLU #314465] *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* [email protected] (David W Noon) *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
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