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authorJoey Hess <joeyh@debian.org>2005-10-07 19:51:38 +0000
committerJoey Hess <joeyh@debian.org>2005-10-07 19:51:38 +0000
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downloadinstallation-guide-1ea73eea5ecc6a8ed901316049259aee737ee554.zip
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+<!-- retain these comments for translator revision tracking -->
+<!-- original version: 11648 untranslated -->
+
+
+ <sect2 arch="alpha"><title>Partitioning in Tru64 UNIX</title>
+<para>
+
+Tru64 UNIX, formerly known as Digital UNIX, which is in turn formerly
+known as OSF/1, uses the partitioning scheme similar to the BSD `disk
+label', which allows for up to eight partitions per disk drive. The
+partitions are numbered `1' through to `8' in
+Linux and ``lettered'' `a' through to `h' in UNIX.
+Linux kernels 2.2 and higher always correspond `1' to
+`a', `2' to `b' and so on. For
+example, <filename>rz0e</filename> in Tru64 UNIX would most likely be called
+<filename>sda5</filename> in Linux.
+
+</para><para>
+
+Partitions in the disk label may overlap. Moreover, the `c' partition
+is required to span the entire disk (thus overlapping all other
+non-empty partitions). Under Linux this makes <filename>sda3</filename>
+identical to <filename>sda</filename> (<filename>sdb3</filename> to <filename>sdb</filename>, if
+present, and so on). Apart from satisfying this requirement, you
+should carefully avoid creating overlapping partitions.
+
+</para><para>
+
+Another conventional requirement is for the `a' partition to start from
+the beginning of the disk, so that it always includes the boot block
+with the disk label. If you intend to boot Debian from that disk, you
+need to size it at least 2MB to fit aboot and perhaps a kernel.
+
+</para><para>
+
+Note that these two partitions are only required for compatibility;
+you must not put a file system onto them, or you'll destroy data. If
+you're not going to share the disk with Tru64 Unix or one of the free
+4.4BSD-Lite derived operating systems (FreeBSD, OpenBSD, or NetBSD),
+you can ignore these requirements, and use the partitioning tool from
+the Debian boot disks. See <xref linkend="partition-programs"/> for details.
+
+</para><para>
+
+Disks can be partitioned with the graphical disk configuration tool that
+is accessible through the Application Manager, or with the command-line
+<command>disklabel</command> utility. Partition type for the Linux file
+system should be set to `resrvd8'. This can only be done via
+<command>disklabel</command>; however, all other configuration can easily be
+performed with the graphical tool.
+
+</para><para>
+
+It is possible, and indeed quite reasonable, to share a swap partition
+between UNIX and Linux. In this case it will be needed to do a
+<command>mkswap</command> on that partition every time the system is rebooted
+from UNIX into Linux, as UNIX will damage the swap signature. You may
+want to run <command>mkswap</command> from the Linux start-up scripts before
+adding swap space with <command>swapon -a</command>.
+
+</para><para>
+
+If you want to mount UNIX partitions under Linux, note that Digital UNIX
+can use two different file system types, UFS and AdvFS, of which Linux
+only understands the former.
+
+</para>
+ </sect2>
+
+ <sect2 arch="alpha"><title>Partitioning in Windows NT</title>
+
+<para>
+
+Windows NT uses the PC-style partition table. If you are manipulating
+existing FAT or NTFS partitions, it is recommended that you use the
+native Windows NT tools (or, more conveniently, you can also
+repartition your disk from the AlphaBIOS setup menu). Otherwise, it
+is not really necessary to partition from Windows; the Linux
+partitioning tools will generally do a better job. Note that when you
+run NT, the Disk Administrator may offer you to write a ``harmless
+signature'' on non-Windows disks if you have any. <emphasis>Never</emphasis> let
+it do that, as this signature will destroy the partition information.
+
+</para><para>
+
+If you plan to boot Linux from an ARC/AlphaBIOS/ARCSBIOS console, you
+will need a (small) FAT partition for MILO. 5 Mb is quite
+sufficient. If Windows NT is installed, its 6 Mb bootstrap partition
+can be employed for this purpose.
+
+</para>
+ </sect2>