Chameleon Svn Source Tree


1The boot: prompt waits for you to type advanced startup options.
2If you don't type anything, the computer continues starting up normally. It
3uses the kernel and configuration files on the startup device, which it also
4uses as the root device.
6Advanced startup options use the following syntax:
8 [device]<kernel> [arguments]
10Example arguments include
12 device: rd=<BSD device name> (e.g. rd=disk0s2)
13 rd=*<IODeviceTree path> (e.g. rd=*/PCI0@0/CHN0@0/@0:1)
15 kernel: kernel name (e.g. "mach_kernel" - must be in "/" )
17 flags: -v (verbose) -s (single user mode),
18 -x (safe mode) -F (ignore boot configuration file)
19 32 (i386 arch) -legacy (no 64 bit apps - kernel flag)
20 64 (x86_64 arch)
22 "Graphics Mode"="WIDTHxHEIGHTxDEPTH" (e.g. "1024x768x32")
24 kernel flags (e.g. debug=0x144)
25 io=0xffffffff (defined in IOKit/IOKitDebug.h)
27Example: mach_kernel rd=disk0s1 -v "Graphics Mode"="1920x1200x32"
29If the computer won't start up properly, you may be able to start it up
30using safe mode. Type -x to start up in safe mode, which ignores all
31cached driver files.
33Special booter hotkeys:
34 F5 Rescans optical drive.
35 F10 Scans and displays all BIOS accessible drives.
37Special booter commands:
38 ?memory Displays information about the computer's memory.
39 ?video Displays VESA video modes supported by the computer's BIOS.
40 ?norescan Leaves optical drive rescan mode.
42Additional useful command-line options:
43 config=<file> Use an alternate Boot.plist file.
44 Extensions=<folder> Use an alternate folder with drivers, kext or mkext.
46Options useful in the file:
47 Wait=Yes|No Prompt for a key press before starting the kernel.
48 Quiet Boot=Yes|No Use quiet boot mode (no messages or prompt).
49 Timeout=8 Number of seconds to pause at the boot: prompt.
50 Instant Menu=Yes Force displaying the partition selection menu.
52 Default Partition Sets the default boot partition,
53 =hd(x,y)| where 'x' & 'y' are the disk and partition numbers
54 =<UUID> or specify the selected volume UUID string.
55 Hide Partition Remove unwanted partition(s) from the boot menu.
56 =hd(x,y) [hd(m,n)] only non mac osx boot partitions can be hidden.
58 Rename Partition Rename partition(s) for the boot menu.
59 =hd(x,y) <alias> [;hd(m,n) <alias2> ...]
61 GUI=No Disable the GUI (enabled by default).
62 Boot Banner=Yes|No Show boot banner in GUI mode (enabled by default).
63 Legacy Logo=Yes|No Use the legacy grey apple logo (disabled by default).
65 PciRoot=<value> Use an alternate value for PciRoot (default value 0).
67 GraphicsEnabler=Yes|No Automatic device-properties generation for gfx cards.
68 UseAtiROM=Yes|No Use an alternate Ati ROM image
69 (path: /Extra/<vendorid>_<devid>.rom)
70 UseNvidiaROM=Yes|No Use an alternate Nvidia ROM image
71 (path: /Extra/<vendorid>_<devid>.rom)
72 VBIOS=Yes|No Inject VBIOS to device-properties.
74 EthernetBuiltIn=Yes|No Automatic "built-in"=yes device-properties generation
75 for ethernet interfaces.
77 USBBusFix=Yes Enable all USB fixes below:
78 EHCIacquire=Yes Enable the EHCI fix (disabled by default).
79 UHCIreset=Yes Enable the UHCI fix (disabled by default).
80 USBLegacyOff=Yes Enable the USB Legacy fix (disabled by default).
82 ForceHPET=Yes|No Force Enable HPET.
84 Wake=No Disable wake up after hibernation (default: enabled).
85 ForceWake=Yes Force using the sleepimage (disabled by default).
86 WakeImage=<file> Use an alternate sleepimage file.
87 (default path is /private/var/vm/sleepimage).
89 DropSSDT=Yes Skip the SSDT tables while relocating the ACPI tables.
90 DSDT=<file> Use an alternate DSDT.aml file
91 (default path: /DSDT.aml /Extra/DSDT.aml).
93 SMBIOS=<file> Use an alternate smbios.plist file
94 (default path: /smbios.plist /Extra/smbios.plist
95 bt(0,0)/Extra/smbios.plist).
97 SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding
98 if smbios.plist doesn't exist, factory
99 values are kept.
101 Scan Single Drive Scan the drive only where the booter got loaded from.
102 =Yes|No Fix rescan pbs when using a DVD reader in AHCI mode.
103 Rescan=Yes Enable CD-ROM rescan mode.
104 Rescan Prompt=Yes Prompts for enable CD-ROM rescan mode.
105 SystemId=<UUID> Set manually the system id UUID,
106 SMUUID in smbios config (reserved field) isn't used.
107 SystemType=<n> Set the system type where n is between 0..6
108 (default =1 (Desktop)
109 md0=<file> Load raw img file into memory for use as XNU's md0
110 ramdisk. /Extra/Postboot.img is used otherwise.

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