If you don't type anything, the computer continues starting up normally. It␊ |
uses the kernel and configuration files on the startup device, which it also␊ |
uses as the root device. ␊ |
␊ |
␊ |
Advanced startup options use the following syntax:␊ |
␊ |
␊ |
[device]<kernel> [arguments]␊ |
␊ |
␊ |
Example arguments include␊ |
␊ |
␊ |
device: rd=<BSD device name> (e.g. rd=disk0s2)␊ |
rd=*<IODeviceTree path> (e.g. rd=*/PCI0@0/CHN0@0/@0:1)␊ |
␊ |
␊ |
kernel: kernel name (e.g. "mach_kernel" - must be in "/" )␊ |
␊ |
␊ |
flags: -v (verbose) -s (single user mode)␊ |
-x (safe mode) -f (ignore caches)␊ |
-F (ignore "Kernel Flags" specified in boot configuration file)␊ |
␊ |
␊ |
"Graphics Mode"="WIDTHxHEIGHTxDEPTH" (e.g. "1024x768x32")␊ |
␊ |
␊ |
kernel flags (e.g. debug=0x144)␊ |
io=0xffffffff (defined in IOKit/IOKitDebug.h)␊ |
␊ |
␊ |
Example: mach_kernel rd=disk0s1 -v "Graphics Mode"="1920x1200x32"␊ |
␊ |
␊ |
If the computer won't start up properly, you may be able to start it up ␊ |
using safe mode. Type -x to start up in safe mode, which ignores all ␊ |
cached driver files.␊ |
␊ |
␊ |
Special booter hotkeys:␊ |
F5 Rescans optical drive.␊ |
F10 Scans and displays all BIOS accessible drives.␊ |
␊ |
␊ |
Special booter commands:␊ |
?memory Displays information about the computer's memory.␊ |
?video Displays VESA video modes supported by the computer's BIOS.␊ |
?norescan Leaves optical drive rescan mode.␊ |
␊ |
␊ |
Additional useful command-line options:␊ |
config=<file> Use an alternate Boot.plist file.␊ |
␊ |
␊ |
Options useful in the com.apple.Boot.plist file:␊ |
Wait=Yes|No Prompt for a key press before starting the kernel.␊ |
"Quiet Boot"=Yes|No Use quiet boot mode (no messages or prompt).␊ |
Timeout=8 Number of seconds to pause at the boot: prompt.␊ |
"Instant Menu"=Yes Force displaying the partition selection menu. ␊ |
␊ |
␊ |
"Default Partition" Sets the default boot partition,␊ |
=hd(x,y)|UUID|"Label" Specified as a disk/partition pair, an UUID, or a ␊ |
label enclosed in quotes.␊ |
␊ |
␊ |
"Hide Partition" Remove unwanted partition(s) from the boot menu.␊ |
=partition Specified, possibly multiple times, as hd(x,y), an␊ |
[;partition2 ...] UUID or label enclosed in quotes.␊ |
|
=partition <alias> Where partition is hd(x,y), UUID or label enclosed␊ |
[;partition2 <alias2> in quotes. The alias can optionally be quoted too. ␊ |
...]␊ |
␊ |
␊ |
GUI=No Disable the GUI (enabled by default).␊ |
"Boot Banner"=Yes|No Show boot banner in GUI mode (enabled by default).␊ |
"Legacy Logo"=Yes|No Use the legacy grey apple logo (disabled by default).␊ |
␊ |
␊ |
PciRoot=<value> Use an alternate value for PciRoot (default value 0).␊ |
␊ |
␊ |
UseKernelCache=Yes|No Default is No. Yes will load pre-linked kernel and will ␊ |
ignore /E/E and /S/L/E/Extensions.mkext.␊ |
␊ |
GraphicsEnabler=Yes|No Automatic device-properties generation for gfx cards.␊ |
UseAtiROM=Yes|No Use an alternate Ati ROM image ␊ |
(path: /Extra/<vendorid>_<devid>_<subsysid>.rom)␊ |
UseNvidiaROM=Yes|No Use an alternate Nvidia ROM image ␊ |
(path: /Extra/<vendorid>_<devid>.rom)␊ |
VBIOS=Yes|No Inject VBIOS to device-properties.␊ |
␊ |
AtiConfig=<cardcfg> Use a different card config (the list can be found in ati.c).␊ |
␊ |
AtiConfig=<cardcfg> Use a different card config␊ |
UseAtiROM=Yes|No Use an alternate Ati ROM image ␊ |
(path: /Extra/<vendorid>_<devid>_<subsysid>.rom)␊ |
UseNvidiaROM=Yes|No Use an alternate Nvidia ROM image ␊ |
(path: /Extra/<vendorid>_<devid>.rom)␊ |
VBIOS=Yes|No Inject NVIDIA VBIOS into device-properties.␊ |
␊ |
EthernetBuiltIn=Yes|No Automatic "built-in"=yes device-properties generation␊ |
for ethernet interfaces.␊ |
␊ |
␊ |
USBBusFix=Yes Enable all USB fixes below:␊ |
EHCIacquire=Yes Enable the EHCI fix (disabled by default).␊ |
UHCIreset=Yes Enable the UHCI fix (disabled by default).␊ |
USBLegacyOff=Yes Enable the USB Legacy fix (disabled by default).␊ |
␊ |
␊ |
ForceHPET=Yes|No Force Enable HPET.␊ |
␊ |
␊ |
Wake=No Disable wake up after hibernation (default: enabled).␊ |
ForceWake=Yes Force using the sleepimage (disabled by default).␊ |
WakeImage=<file> Use an alternate sleepimage file. ␊ |
(default path is /private/var/vm/sleepimage).␊ |
␊ |
␊ |
DropSSDT=Yes Skip the SSDT tables while relocating the ACPI tables.␊ |
DSDT=<file> Use an alternate DSDT.aml file ␊ |
(default paths:␊ |
/DSDT.aml /Extra/DSDT.aml bt(0,0)/Extra/DSDT.aml).␊ |
␊ |
GenerateCStates=Yes Enable auto generation of Processor (C-States) and/or␊ |
GeneratePStates=Yes Performance (P-States) power states.␊ |
␊ |
EnableC2State=Yes Enable specific Processor power states, C2,␊ |
EnableC3State=Yes C3␊ |
EnableC4State=Yes and C4.␊ |
␊ |
␊ |
GenerateCStates=Yes Enable auto generation of processor idle sleep states␊ |
(C-States).␊ |
GeneratePStates=Yes Enable auto generation of processor power performance␊ |
states (P-States).␊ |
␊ |
EnableC2State=Yes Enable specific Processor power state, C2.␊ |
EnableC3State=Yes Enable specific Processor power state, C3.␊ |
EnableC4State=Yes Enable specific Processor power state, C4.␊ |
␊ |
SMBIOS=<file> Use an alternate SMBIOS.plist file ␊ |
(default paths:␊ |
/Extra/SMBIOS.plist bt(0,0)/Extra/SMBIOS.plist).␊ |
␊ |
SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding␊ |
if smbios.plist doesn't exist, factory␊ |
values are kept.␊ |
␊ |
␊ |
SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding if␊ |
smbios.plist doesn't exist, factory values are kept.␊ |
␊ |
"Scan Single Drive" Scan the drive only where the booter got loaded from.␊ |
=Yes|No Fix rescan pbs when using a DVD reader in AHCI mode. ␊ |
Rescan=Yes Enable CD-ROM rescan mode.␊ |