| 1 | The boot: prompt waits for you to type advanced startup options.␊ |
| 2 | If you don't type anything, the computer continues starting up normally. It␊ |
| 3 | uses the kernel and configuration files on the startup device, which it also␊ |
| 4 | uses as the root device. ␊ |
| 5 | ␊ |
| 6 | Advanced startup options use the following syntax:␊ |
| 7 | ␊ |
| 8 | [device]<kernel> [arguments]␊ |
| 9 | ␊ |
| 10 | Example arguments include␊ |
| 11 | ␊ |
| 12 | device: rd=<BSD device name> (e.g. rd=disk0s2)␊ |
| 13 | rd=*<IODeviceTree path> (e.g. rd=*/PCI0@0/CHN0@0/@0:1)␊ |
| 14 | ␊ |
| 15 | kernel: kernel name (e.g. "mach_kernel" - must be in "/" )␊ |
| 16 | ␊ |
| 17 | flags: -v (verbose) -s (single user mode), ␊ |
| 18 | -x (safe mode) -F (ignore boot configuration file)␊ |
| 19 | ␊ |
| 20 | "Graphics Mode"="WIDTHxHEIGHTxDEPTH" (e.g. "1024x768x32")␊ |
| 21 | ␊ |
| 22 | kernel flags (e.g. debug=0x144)␊ |
| 23 | io=0xffffffff (defined in IOKit/IOKitDebug.h)␊ |
| 24 | ␊ |
| 25 | Example: mach_kernel rd=disk0s1 -v "Graphics Mode"="1920x1200x32"␊ |
| 26 | ␊ |
| 27 | If the computer won't start up properly, you may be able to start it up using␊ |
| 28 | safe mode. Type -x to start up in safe mode, which ignores all cached␊ |
| 29 | driver files.␊ |
| 30 | ␊ |
| 31 | Special booter hotkeys:␊ |
| 32 | F5 Rescans optical drive.␊ |
| 33 | F10 Scans and displays all BIOS accessible drives.␊ |
| 34 | ␊ |
| 35 | Special booter commands:␊ |
| 36 | ?memory Displays information about the computer's memory.␊ |
| 37 | ?video Displays VESA video modes supported by the computer's BIOS.␊ |
| 38 | ?norescan Leaves optical drive rescan mode.␊ |
| 39 | ␊ |
| 40 | Additional useful command-line options:␊ |
| 41 | config=<file> Use an alternate Boot.plist file.␊ |
| 42 | ␊ |
| 43 | Options useful in the com.apple.Boot.plist file:␊ |
| 44 | Wait=Yes|No Prompt for a key press before starting the kernel.␊ |
| 45 | "Quiet Boot"=Yes|No Use quiet boot mode (no messages or prompt).␊ |
| 46 | Timeout=8 Number of seconds to pause at the boot: prompt.␊ |
| 47 | "Instant Menu"=Yes Force displaying the partition selection menu. ␊ |
| 48 | ␊ |
| 49 | "Default Partition" Sets the default boot partition,␊ |
| 50 | =hd(x,y) where 'x' is the disk number, 'y' the partition number.␊ |
| 51 | "Hide Partition" Remove unwanted partition(s) from the boot menu.␊ |
| 52 | =hd(x,y) [hd(m,n)]␊ |
| 53 | ␊ |
| 54 | "Rename Partition" Rename partition(s) for the boot menu.␊ |
| 55 | =hd(x,y) <alias>[;hd(m,n) <alias2> ...]␊ |
| 56 | ␊ |
| 57 | GUI=No Disable the GUI (enabled by default).␊ |
| 58 | "Boot Banner"=Yes|No Show boot banner in GUI mode (enabled by default).␊ |
| 59 | "Legacy Logo"=Yes|No Use the legacy grey apple logo (disabled by default).␊ |
| 60 | ␊ |
| 61 | PciRoot=<value> Use an alternate value for PciRoot. (default value: 0).␊ |
| 62 | ␊ |
| 63 | GraphicsEnabler=Yes|No Automatic device-properties generation for graphics cards.␊ |
| 64 | VideoROM=<file> Use an alternate ROM image (default path: /NVIDIA.ROM).␊ |
| 65 | VBIOS=Yes|No Inject VBIOS to device-properties.␊ |
| 66 | ␊ |
| 67 | EthernetBuiltIn=Yes|No Automatic "built-in"=yes device-properties generation␊ |
| 68 | for ethernet interfaces.␊ |
| 69 | ␊ |
| 70 | USBBusFix=Yes Enable the EHCI and UHCI fixes (disabled by default).␊ |
| 71 | EHCIacquire=Yes Enable the EHCI fix (disabled by default).␊ |
| 72 | UHCIreset=Yes Enable the UHCI fix (disabled by default).␊ |
| 73 | ␊ |
| 74 | Wake=No Disable wake up after hibernation (enbaled by default).␊ |
| 75 | ForceWake=Yes Force using the sleepimage (disabled by default).␊ |
| 76 | WakeImage=<file> Use an alternate sleepimage file ␊ |
| 77 | (default path is /private/var/vm/sleepimage).␊ |
| 78 | ␊ |
| 79 | DropSSDT=Yes Skip the SSDT tables while relocating the ACPI tables.␊ |
| 80 | DSDT=<file> Use an alternate DSDT.aml file ␊ |
| 81 | (default path: /DSDT.aml /Extra/DSDT.aml)␊ |
| 82 | ␊ |
| 83 | SMBIOS=<file> Use an alternate smbios.plist file ␊ |
| 84 | (default path: /smbios.plist /Extra/smbios.plist␊ |
| 85 | bt(0,0)/Extra/smbios.plist).␊ |
| 86 | ␊ |
| 87 | SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding␊ |
| 88 | if smbios.plist doesn't exist, factory␊ |
| 89 | values are kept.␊ |
| 90 | ␊ |
| 91 | "Scan Single Drive" Scan the drive only where the booter got loaded from.␊ |
| 92 | =Yes|No Fix rescan issues when using a DVD reader in AHCI mode. ␊ |
| 93 | Rescan=Yes Enable CD-ROM rescan mode.␊ |
| 94 | "Rescan Prompt"=Yes Prompts for enable CD-ROM rescan mode.␊ |
| 95 | SystemId=<UUID>␉ Set manually the system id UUID,␊ |
| 96 | ␉␉␉ SMUUID in smbios config is a reserved field and should not be used.␊ |
| 97 | ␉␉␉ So SMUUID has no effect on SystemId in this version␊ |
| 98 | |
