122 lines
4.6 KiB
Plaintext
122 lines
4.6 KiB
Plaintext
How to install BSD on your Amiga:
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--------------------------------
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*Please* (re)read the README.amiga file, and make sure your system is
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supported by the current kernel.
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Since BSD doesn't yet have a floppy driver, and you'll need a root fs
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to start using commands (chicken and egg problem..) to make your own
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fs, installation of the root fs is a bit hacky...
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vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
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> We copy a binary image (8M) of the root fs directly to the place on <
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> your harddisk. This is an extremely dangerous thing to do, since if <
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> you get the offsets wrong, you'll destroy data on other partitions of <
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> the drive! <
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If you don't feel like risking the life of innocent data on your disk,
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better stop installing now, and wait until installation gets safer in
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the future!!!
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Ok.. if you're reading on, start up hdtoolbox, and create some partitions
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for use by BSD. You'll have to at least create two partitions:
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o a root partition:
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Must have FileSystem: Custom File System
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Identifier: 0x42534452 (`BSDR')
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Reserved begin: 0
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end: 0
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Use custom boot code: NO (ie. no checkmark)
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FS block size: 512
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You don't have to check Automount, the partition could only
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confuse AmigaDOS.
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o a swap partition:
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Must have FileSystem: Custom File System
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Identifier: 0x42534453 (`BSDS')
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Reserved begin: 0
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end: 0
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Use custom boot code: NO (ie. no checkmark)
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FS block size: 512
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You don't have to check Automount, the partition could only
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confuse AmigaDOS.
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You might also add a /usr partition, for example on BSDD:
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Must have FileSystem: Custom File System
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Identifier: 0x42534444 (`BSDD')
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Reserved begin: 0
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end: 0
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Use custom boot code: NO (ie. no checkmark)
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FS block size: 512
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You don't have to check Automount, the partition might only
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confuse AmigaDOS.
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Other settings (like MaxTransfer and Mask) are ignored.
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Now, you'll have to find out about the exact block start address and length
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in blocks of the BSDR fs (BSD will find out about the data of the other
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partitions once it's started up). Go into "Change Drive Type" menu, and
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write down the "Blocks per Cylinder" value it shows you for this drive. Then
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go into the "Partition Drive" menu, select your BSDR partition, enable
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"Advanced Options", and write down the "Start Cyl" and "End Cyl" values.
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Doing "Blocks per Cylinder" * "Start Cyl" gives you the block start number
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of the BSDR partition, doing "Blocks per Cylinder" * ("End Cyl" - "Start Cyl")
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results in the length of the partition in blocks. You'll need these values
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to install the root fs onto the drive, so please write them down, and PLEASE
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make sure you calculated them right, since if not, you'll scribble anywhere
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on the drive, and that just might be.. (insert worst imaginations..).
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**************************************************************************
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The rootfs has a length of ~8M, 16448 blocks. Your root fs must have at
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least (!) the same amount of blocks. You don't have to make it exactly
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16448 blocks though, a task that could even be impossible if the number of
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blocks per cylinder on your drive is not a divisor of 16448.
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**************************************************************************
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Now you're almost ready to do the installation. Unzip the distributed rootfs.gz
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file (you'll need 8M of free space on your amigados partition for this!), and
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then do:
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filetodev {START_NUMBER} 16448 rootfs scsi.device {UNIT} 1000
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with:
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{START_NUMBER}: above calculated block start number
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{UNIT}: the scsi unit you're installing on, 0-6
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The filetodev program is included in the bffs11.lzh archive, and was written
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by Chris Hooper (cdh@mtu.edu).
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How to start BSD
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----------------
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You start BSD with a loader program from AmigaDOS. This loader is called
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`loadbsd', and it takes as parameter the kernel file, normally vmunix.
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So,
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loadbsd vmunix
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will (try to...) boot BSD. The kernel as distributed prefers to boot from
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SCSI unit 6. It will probably boot from other units as well (can't test
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this at the moment, since I don't want to repartition my other drives). If
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you run into problems (ie. BSD says it can't mount the root filesystem),
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you'll have to recompile the kernel. Please see the RECOMPILE file for
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how to do this.
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What about /usr ?
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-----------------
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For the first distribution of the kernel, I decided not to distribute
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binaries for the /usr filesystem. Simply, because /usr is huge compared
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to root, and a.out headers are likely to change in the future, rendering
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a distributed /usr filesystem almost useless.
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