Differences

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--- fuss:osx86 [2013/11/25 01:01]
office created
+++ fuss:osx86 [2017/02/22 18:30] (current)
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+====== Boot ======
+Darwin/OSX on BIOS hardware uses a series of bootfiles which are explained on [[http://www.puredarwin.org/developers/booting/boot|PureDarwin's boot page]].
+^ File ^ Description ^
+| ''boot'' | (sometimes referred to as "boot2") HFS+ startup file, lives in the HFS+ file system structure (not a regular file). (Could also be used as a regular file; using a special version of boot1h that would no longer need it to be HFS+ the startup file.) |
+| ''boot0'' | Master Boot Record (MBR), lives in the first 440 bytes of the disk (not identical to the MBR from other OSes) |
+| ''boot1h'' | stage 1 booter (bootsector) for HFS+ partitions, lives in the first 512 bytes of the partition |
+| ''boot1u''  |  |
+| ''boot1u0'' |  |
+| ''cdboot''  | booter for CD-ROMs (only works with valid Extensions.mkext due to a bug) |
+| ''chain0''  |  |
+====== Restoring Chameleon ======
+<code bash>
+fdisk -f boot0 -u -y /dev/diskX    # install boot0 to the MBR, X is the disk number
+dd if=boot1h of=/dev/diskXsY       # X is disk number, Y is the number of the HFS partition.
+cp boot /Volumes/XXX               # boot file must be at the root of the partition (''/'')
+fdisk -e /dev/diskX                # edit the disk, X is the disk number
+flag 2                             # flag the second partition HFS, first partition being EFI
+write                              # write the changes to disk
+exit                               # leave fdisk.
+</code>