The "skipped" partition number 2 is in fact the extended partition
containing the logical partition (5). So the order of events is:
1) create primary partition number 1
2) create logical partition number 5, causing the partitioner to implicitly
allocate an extended partition number 2 (as it must - you can't have a logical
partition without a containing extended partition)
3) create primary partition number 3
If you attempt to create two more primary partitions, then the first
attempt will succeed and be allocated number 4, and the second attempt
will fail. And all this sort of thing is why I detest the MS-DOS
partition table format with a passion, even though I can't avoid working
with it ...
GRUB error 18 is "Selected cylinder exceeds maximum supported by BIOS",
according to the GRUB documentation. The full description is:
"This error is returned when a read is attempted at a linear block
address beyond the end of the BIOS translated area. This generally
happens if your disk is larger than the BIOS can handle (512MB for
(E)IDE disks on older machines or larger than 8GB in general)."
("Larger than 8GB in general" is IIRC out of date as a general statement
nowadays, although there have certainly been systems with a limit around
here - see the Large-Disk-HOWTO - and you may have such a system.)
I expect that the GRUB error you encountered is in fact rather separate
from the partitioning problem you reported, and that it could be solved
e.g. by putting a small /boot partition near the start of the disk.
Yes, I have no problem with parking this report for a while if you need
to.
--
installer skips primary partition
https://bugs.launchpad.net/bugs/318393
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