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<sect2 arch="i386"><title>&arch-title; �ǤΥѡ��ƥ������ʬ��</title>
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If you have an existing other operating system such as DOS or Windows and
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you want to preserve that operating system while installing Debian, you may
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need to resize its partition to free up space for the Debian installation.
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The installer supports resizing of both FAT and NTFS filesystems; when you
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get to the installer's partitioning step, select the option to partition
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manually and then simply select an existing partition and change its size.
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DOS �ޤ��� Windows �Τ褦��¾�δ�¸�Υ��ڥ졼�ƥ������ƥब���ꡢDebian
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�ȡ��뤹��ݤˤ��Υ��ڥ졼�ƥ������ƥ��ʤ��褦�ˤ�������С�
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Debian �ȡ��뤹�륹�ڡ�����������뤿��˥ѡ��ƥ�����������ѹ�
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����ɬ�פ�����Ǥ��礦�����ȡ���ϡ�FAT ����� NTFS �ե����륷���ƥ��ξ����
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�������ѹ��ݡ��Ȥ��Ƥ��ޤ������ȡ���Υѡ��ƥ������ʬ��Υ��ƥåפˤʤꡢ
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��ư��ʬ�䤹�륪�ץ������������ϡ�ñ�˴�¸�Υѡ��ƥ�����������
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���������ѹ����Ƥ���������
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The PC BIOS generally adds additional constraints for disk
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partitioning. There is a limit to how many <quote>primary</quote> and
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<quote>logical</quote> partitions a drive can contain. Additionally, with pre
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1994–98 BIOSes, there are limits to where on the drive the BIOS can boot
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from. More information can be found in the
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<ulink url="&url-partition-howto;">Linux Partition HOWTO</ulink> and the
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<ulink url="&url-phoenix-bios-faq-large-disk;">Phoenix BIOS FAQ</ulink>, but
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this section will include a brief overview to help you plan most situations.
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���̤˥ǥ������ѡ��ƥ�������;ʬ�����¤��ɲä��뤳�Ȥˤʤ�ޤ���
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1 �ĤΥɥ饤�֤˺����Ǥ��� <quote>����</quote> �����
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<quote>����</quote> �ѡ��ƥ������θĿ������¤����뤳�Ȥ⤽�ΰ�ĤǤ���
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����ˡ�1994 ǯ���� 1998 ǯ�δ֤� BIOS �ˤϡ�
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BIOS ���ɥ饤�֤Τɤξ���ư�Ǥ��뤫�ˤĤ��Ƥ����¤�����ޤ���
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<ulink url="&url-partition-howto;">Linux Partition HOWTO</ulink> ��
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<ulink url="&url-phoenix-bios-faq-large-disk;">Phoenix BIOS FAQ</ulink>
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�����ˤʤäƤ��������Ȥ��ơ�
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������Ǥϡ����̤ˤ褯�������������Ω�ij��פ��ñ�˾Ҳ𤷤ޤ���
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<quote>Primary</quote> partitions are the original partitioning scheme for PC
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disks. However, there can only be four of them. To get past this
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limitation, <quote>extended</quote> and <quote>logical</quote> partitions were invented. By
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setting one of your primary partitions as an extended partition, you
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can subdivide all the space allocated to that partition into logical
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partitions. You can create up to 60 logical partitions per extended
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partition; however, you can only have one extended partition per
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<quote>����</quote> �ѡ��ƥ������ϡ�PC �ǥ������˸������ä�
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�����������θĿ��Ϥ��ä� 4 �Ĥ˸¤��Ƥ��ޤ���
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<quote>��ĥ</quote> ����� <quote>����</quote> �ѡ��ƥ�����ͰƤ���ޤ�����
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���ܥѡ��ƥ������� 1 �Ĥ��ĥ�ѡ��ƥ������Ȥ������ꤹ��ȡ�
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�����Ĥ��������ѡ��ƥ������ˤ����ʬ�䤹�뤳�Ȥ��Ǥ��ޤ���
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1 �Ĥγ�ĥ�ѡ��ƥ������ˤϡ������ѡ��ƥ�������
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��������1 �ĤΥǥ������˺����Ǥ����ĥ�ѡ��ƥ������� 1 �Ĥ����Ǥ���
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Linux limits the partitions per drive to 15 partitions for SCSI disks
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(3 usable primary partitions, 12 logical partitions), and 63
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partitions on an IDE drive (3 usable primary partitions, 60 logical
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partitions). However the normal &debian; system provides
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only 20 devices for partitions, so you may not install on partitions
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higher than 20 unless you first manually create devices for those
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Linux �ˤ�����ɥ饤�֤�����Υѡ��ƥ������������¤ϡ�
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SCSI �ǥ������ξ�� 15 �Ĥޤ�
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(���ܥѡ��ƥ������ 3 �Ĥ������ѡ��ƥ������ 12 ��)��
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IDE �ǥ������ξ��� 63 �Ĥޤ�
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(���ܥѡ��ƥ������ 3 �Ĥ������ѡ��ƥ������ 60 ��) �Ǥ���
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�������̾�� &debian; �����ƥ�Ǥϡ�
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�ѡ��ƥ�������Ѥ� 20 �ΥǥХ��������Ѱդ��Ƥ��ʤ��Τǡ�
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20 �ʾ�Υѡ��ƥ���������ĥǥ������˥��ȡ��뤹��ˤϡ�
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�ǽ�ˤ����Υѡ��ƥ�������ѤΥǥХ�����ʬ�Ǻ�������ɬ�פ�����ޤ���
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If you have a large IDE disk, and are using neither LBA addressing,
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nor overlay drivers (sometimes provided by hard disk manufacturers),
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then the boot partition (the partition containing your kernel image)
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must be placed within the first 1024 cylinders of your hard drive
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(usually around 524 megabytes, without BIOS translation).
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�礭�� IDE �ǥ�������Ȥ����ˡ����Υǥ�������
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LBA ���ɥ쥹�䥪���С��쥤�ɥ饤�� (�ϡ��ɥǥ������������������뤳�Ȥ�����ޤ�)
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��ȤäƤ��ʤ���С��֡��ȥѡ��ƥ������ (�����ͥ륤������֤����ѡ��ƥ������)
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�ϥϡ��ɥɥ饤�֤���Ƭ���� 1024 ������������֤��ʤ���Фʤ�ޤ���
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(BIOS �Ѵ����ʤ��ȡ��������� 524 �ᥬ�Х��ȤǤ�)��
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This restriction doesn't apply if you have a BIOS newer than around
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1995–98 (depending on the manufacturer) that supports the <quote>Enhanced
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Disk Drive Support Specification</quote>. Both Lilo, the Linux loader, and
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Debian's alternative <command>mbr</command> must use the BIOS to read the
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kernel from the disk into RAM. If the BIOS int 0x13 large disk access
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extensions are found to be present, they will be utilized. Otherwise,
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the legacy disk access interface is used as a fall-back, and it cannot
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be used to address any location on the disk higher than the 1023rd
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cylinder. Once Linux is booted, no matter what BIOS your computer
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has, these restrictions no longer apply, since Linux does not use the
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BIOS for disk access.
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1995��98 ǯ������ (������ˤ�äưۤʤ�ޤ�) �ʹߤ���¤���졢
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<quote>Enhanced Disk Drive Support Specification</quote> �ݡ��Ȥ��Ƥ���
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BIOS �ˤϡ��������¤����ƤϤޤ�ޤ���
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Lilo (Linux ������) �� Debian �����إ����� <command>mbr</command>
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�ϡ������ͥ��ǥ��������� RAM ���ɤ߹���ݤˡ�
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������� BIOS �����Ѥ��ʤ���Фʤ�ޤ���
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BIOS �� int 0x13 �顼���ǥ���������������ĥ�����ѤǤ���ʤ�
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�Ǥ��ʤ����ϵ켰�Υ������������ե����������Ѥ���ޤ���
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�����Ƹ�ԤǤ� 1023 �������ޤǤ������������Ǥ��ޤ���
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�ʤ������� Linux ����ư���Ƥ��ޤ��С�
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Linux �� �ǥ��������������� BIOS �����Ѥ��ޤ��顢
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���Ȥ��� BIOS �����Ǥ��졢�������¤ˤ���ɬ�פϤ���ޤ���
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If you have a large disk, you might have to use cylinder translation
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techniques, which you can set from your BIOS setup program, such as
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LBA (Logical Block Addressing) or CHS translation mode (<quote>Large</quote>).
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More information about issues with large disks can be found in the
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<ulink url="&url-large-disk-howto;">Large Disk HOWTO</ulink>. If you
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are using a cylinder translation scheme, and the BIOS does not support
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the large disk access extensions, then your boot partition has to fit
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within the <emphasis>translated</emphasis> representation of the
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�礭�ʥǥ����������ξ��ϡ�
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�������Ѵ�������Ȥ�ɬ�פ����뤫�⤷��ޤ���
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����� BIOS ������ץ������� LBA (Logical Block Addressing) �Ȥ�
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CHS �Ѵ��⡼�� (<quote>Large</quote>) �Ȥ��ä����ܤ�������Ǥ���Ǥ��礦��
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�礭�ʥǥ������˴ؤ�������ˤĤ��Ƥξܺ٤ʾ���ˤĤ��Ƥϡ�
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<ulink url="&url-large-disk-howto;">Large Disk HOWTO</ulink>
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�ʤ����������Ѵ�������Ȥ����ϡ�
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�֡��ȥѡ��ƥ������� <emphasis>�Ѵ����</emphasis>
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�� 1024 �֥�����������˼���ʤ���Фʤ�ޤ���
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The recommended way of accomplishing this is to create a small (5–10MB
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should suffice) partition at the beginning of the disk to be used as
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the boot partition, and then create whatever other partitions you wish
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to have, in the remaining area. This boot partition
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<emphasis>must</emphasis> be mounted on <filename>/boot</filename>,
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since that is the directory where the Linux kernel(s) will be stored.
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This configuration will work on any system, regardless of whether LBA
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or large disk CHS translation is used, and regardless of whether your
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BIOS supports the large disk access extensions.
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������ϡ���ư�Ѥξ����ʥѡ��ƥ������ (5��10MB ����н�ʬ�Ǥ�)
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��ǥ���������Ƭ�˺�������
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�Ĥ���ΰ�ˤ����ߤ˹�碌��¾�Υѡ��ƥ�������������뤳�ȤǤ���
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���Υ֡��ȥѡ��ƥ������ϡ�Linux �����ͥ뤬�������
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<filename>/boot</filename> �ǥ��쥯�ȥ� �˥ޥ���Ȥ��ʤ����<emphasis>�ʤ�ޤ���</emphasis>��
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��������ʤ顢LBA �� �顼���ǥ����� CHS �Ѵ������Ѥ��Ƥ����Ȥ��Ƥ⡢
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�ޤ������Ȥ��� BIOS ���顼���ǥ���������������ĥ�ݡ��Ȥ��Ƥ����Ȥ��Ƥ⡢
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������Υ����ƥ�Ǥ�����ʤ��Ǥ��礦��