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 | GUI=No Disable the GUI (enabled by default).␊ |
55 | "Boot Banner"=Yes|No Show boot banner in GUI mode (enabled by default).␊ |
56 | "Legacy Logo"=Yes|No Use the legacy grey apple logo (disabled by default).␊ |
57 | ␊ |
58 | PciRoot=<value> Use an alternate value for PciRoot. (default value: 0).␊ |
59 | ␊ |
60 | GraphicsEnabler=Yes|No Automatic device-properties generation for graphics cards.␊ |
61 | VideoROM=<file> Use an alternate ROM image (default path: /NVIDIA.ROM).␊ |
62 | VBIOS=Yes|No Inject VBIOS to device-properties.␊ |
63 | ␊ |
64 | EthernetBuiltIn=Yes|No Automatic "built-in"=yes device-properties generation␊ |
65 | for ethernet interfaces.␊ |
66 | ␊ |
67 | USBBusFix=Yes Enable the EHCI and UHCI fixes (disabled by default).␊ |
68 | EHCIacquire=Yes Enable the EHCI fix (disabled by default).␊ |
69 | UHCIreset=Yes Enable the UHCI fix (disabled by default).␊ |
70 | ␊ |
71 | Wake=No Disable wake up after hibernation (enbaled by default).␊ |
72 | ForceWake=Yes Force using the sleepimage (disabled by default).␊ |
73 | WakeImage=<file> Use an alternate sleepimage file ␊ |
74 | (default path is /private/var/vm/sleepimage).␊ |
75 | ␊ |
76 | DropSSDT=Yes Skip the SSDT tables while relocating the ACPI tables.␊ |
77 | DSDT=<file> Use an alternate DSDT.aml file ␊ |
78 | (default path: /DSDT.aml /Extra/DSDT.aml)␊ |
79 | ␊ |
80 | SMBIOS=<file> Use an alternate smbios.plist file ␊ |
81 | (default path: /smbios.plist /Extra/smbios.plist␊ |
82 | bt(0,0)/Extra/smbios.plist).␊ |
83 | ␊ |
84 | SMBIOSdefaults=No Don't use the Default values for SMBIOS overriding␊ |
85 | if smbios.plist doesn't exist, factory␊ |
86 | values are kept.␊ |
87 | ␊ |
88 | "Scan Single Drive" Scan the drive only where the booter got loaded from.␊ |
89 | =Yes|No Fix rescan issues when using a DVD reader in AHCI mode. ␊ |
90 | Rescan=Yes Enable CD-ROM rescan mode.␊ |
91 | "Rescan Prompt"=Yes Prompts for enable CD-ROM rescan mode.␊ |
92 | |