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 caches)
19 -F (ignore "Kernel Flags" specified in boot configuration file)
21 "Graphics Mode"="WIDTHxHEIGHTxDEPTH" (e.g. "1024x768x32")
23 kernel flags (e.g. debug=0x144)
24 io=0xffffffff (defined in IOKit/IOKitDebug.h)
26Example: mach_kernel rd=disk0s1 -v "Graphics Mode"="1920x1200x32"
28If the computer won't start up properly, you may be able to start it up
29using safe mode. Type -x to start up in safe mode, which ignores all
30cached driver files.
32Special booter hotkeys:
33 F5 Rescans optical drive.
34 F10 Scans and displays all BIOS accessible drives.
36Special booter commands:
37 ?memory Displays information about the computer's memory.
38 ?video Displays VESA video modes supported by the computer's BIOS.
39 ?norescan Leaves optical drive rescan mode.
41Additional useful command-line options:
42 config=<file> Use an alternate Boot.plist file.
44Options useful in the org.chameleon.Boot.plist file:
45 Wait=Yes|No Prompt for a key press before starting the kernel.
46 "Quiet Boot"=Yes|No Use quiet boot mode (no messages or prompt).
47 Timeout=8 Number of seconds to pause at the boot: prompt.
48 "Instant Menu"=Yes Force displaying the partition selection menu.
50 "Default Partition" Sets the default boot partition,
51 =hd(x,y)|UUID|"Label" Specified as a disk/partition pair, an UUID, or a
52 label enclosed in quotes.
54 "Hide Partition" Remove unwanted partition(s) from the boot menu.
55 =partition Specified, possibly multiple times, as hd(x,y), an
56 [;partition2 ...] UUID or label enclosed in quotes.
58 "Rename Partition" Rename partition(s) for the boot menu.
59 =partition <alias> Where partition is hd(x,y), UUID or label enclosed
60 [;partition2 <alias2> in quotes. The alias can optionally be quoted too.
61 ...]
63 GUI=No Disable the GUI (enabled by default).
64 "Boot Banner"=Yes|No Show boot banner in GUI mode (enabled by default).
65 ShowInfo=No Disables display of partition and resolution details.
66 "Boot Banner"=No will also disable this info.
67 "Legacy Logo"=Yes|No Use the legacy grey apple logo (disabled by default).
69 PciRoot=<value> Use an alternate value for PciRoot (default value 0).
71 UseKernelCache=Yes|No Yes will load pre-linked kernel and will ignore /E/E
72 and /S/L/E/Extensions.mkext.
73Default is No but Yes if you use Lion on a Raid partition.
75 KeyLayout=keymap Use to change the keyboard mapping of the bootloader
76 (e.g. KeyLayout=mac-fr)
78 GraphicsEnabler=Yes|No Automatic device-properties generation for gfx cards.
79 AtiConfig=<cardcfg> Use a different card config, e.g. AtiConfig=Megalodon.
80 AtiPorts=<value> Specify the number of ports, e.g. AtiPorts=2.
81 UseAtiROM=Yes|No Use an alternate Ati ROM image
82 (path: /Extra/<vendorid>_<devid>_<subsysid>.rom)
83 UseNvidiaROM=Yes|No Use an alternate Nvidia ROM image
84 (path: /Extra/<vendorid>_<devid>.rom)
85 VBIOS=Yes|No Inject NVIDIA VBIOS into device-properties.
86 display_0=<value> Inject alternate value of display-cfg into NVDA,Display-A@0 (HEX).
87 display_1=<value> Inject alternate value of display-cfg into NVDA,Display-B@1 (HEX).
89 EthernetBuiltIn=Yes|No Automatic "built-in"=yes device-properties generation
90 for ethernet interfaces.
92 USBBusFix=Yes Enable all USB fixes below:
93 EHCIacquire=Yes Enable the EHCI fix (disabled by default).
94 UHCIreset=Yes Enable the UHCI fix (disabled by default).
95 USBLegacyOff=Yes Enable the USB Legacy fix (disabled by default).
97 ForceHPET=Yes|No Force Enable HPET.
99 Wake=No Disable wake up after hibernation (default: enabled).
100 ForceWake=Yes Force using the sleepimage (disabled by default).
101 WakeImage=<file> Use an alternate sleepimage file.
102 (default path is /private/var/vm/sleepimage).
104 DropSSDT=Yes Skip the SSDT tables while relocating the ACPI tables.
105 DSDT=<file> Use an alternate DSDT.aml file
106 (default paths:
107 /DSDT.aml /Extra/DSDT.aml bt(0,0)/Extra/DSDT.aml).
109 GenerateCStates=Yes Enable auto generation of processor idle sleep states
110 (C-States).
111 GeneratePStates=Yes Enable auto generation of processor power performance
112 states (P-States).
113 CSTUsingSystemIO=Yes New C-State _CST generation method using SystemIO
114 registers instead of FixedHW.
116 EnableC2State=Yes Enable specific Processor power state, C2.
117 EnableC3State=Yes Enable specific Processor power state, C3.
118 EnableC4State=Yes Enable specific Processor power state, C4.
120 SMBIOS=<file> Use an alternate SMBIOS.plist file
121 (default paths:
122 /Extra/SMBIOS.plist bt(0,0)/Extra/SMBIOS.plist).
124 SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding if
125 smbios.plist doesn't exist, factory values are kept.
127 "Scan Single Drive" Scan the drive only where the booter got loaded from.
128 =Yes|No Fix rescan pbs when using a DVD reader in AHCI mode.
129 Rescan=Yes Enable CD-ROM rescan mode.
130 "Rescan Prompt"=Yes Prompts for enable CD-ROM rescan mode.
131 SystemId=<UUID> Set manually the system id UUID,
132 SMUUID in smbios config (reserved field) isn't used.
133 SystemType=<n> Set the system type where n is between 0..6
134 (default =1 (Desktop)
135 md0=<file> Load raw img file into memory for use as XNU's md0
136 ramdisk. /Extra/Postboot.img is used otherwise.

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