Gentoo Archives: gentoo-user

From: Peter Humphrey <peter@××××××××××××××.org>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Boot partitions (WAS: migrating disks (from mounts to disklabels
Date: Tue, 23 Nov 2010 15:55:25
In Reply to: Re: [gentoo-user] Boot partitions (WAS: migrating disks (from mounts to disklabels by David W Noon
1 On Sunday 21 November 2010 16:22:15 David W Noon wrote:
3 > What I suspect is in the remainder of that space is a hidden primary
4 > partition containing a "transparent" bootstrap that augments the BIOS
5 > and permits booting from a logical/extended partition. This would be
6 > similar to the old OS/2 Boot Manager, although that was hardly
7 > transparent. This hidden partition was probably placed there by
8 > cfdisk when you first partitioned the drive and started it with an
9 > extended partition. The OS/2 FDISK.COM did something similar when
10 > the first partition on a drive was not a primary (including Boot
11 > Manager).
12 >
13 > A forensic examination of that area would be of interest.
15 Including attempting creation of three more primary partitions. If your
16 hunch is right, the last will not be created as the allowable four exist
17 already.
19 I don't believe your hunch is right though - it's just too complex to be
20 worthwhile for any but a very few customers.
22 Nobody's answered my parenthetical question though: why do SCSI and IDE
23 interfaces allow different total numbers of partitions? Has one of them
24 stolen a bit for more urgent use elsewhere?
26 --
27 Rgds
28 Peter. Linux Counter 5290, 1994-04-23.