/boot/defaults/loader.conf
From GhostBSD Wiki
Welcome to  /boot/defaults/loader.conf.
|
Contents
- 1 Introduction
- 2 Content
- 2.1 Basic configuration options
- 2.2 Splash screen configuration
- 2.3 Screen saver modules
- 2.4 Random number generator configuration
- 2.5 RAM Blacklist configuration
- 2.6 Microcode loading configuration
- 2.7 ACPI settings
- 2.8 Audit settings
- 2.9 Initial memory disk settings
- 2.10 Loader settings
- 2.11 Kernel settings
- 2.12 Kernel tunables
- 2.13 Module loading syntax example
- 3 GhostBSD defaults
Introduction
This is the content /boot/defaults/loader.conf of GhostBSD 20.01. with a wiki formatting.
Content
This is loader.conf - a file full of useful variables that you can
set to change the default load behavior of your system. You should
not edit this file!
Put any overrides into one of the loader_conf_files instead and you will be able to update these defaults later without spamming your local configuration information.
All arguments must be in double quotes.
$FreeBSD$
Basic configuration options
exec="echo Loading /boot/defaults/loader.conf
| Variable | Description |
|---|---|
| kernel="kernel" | /boot sub-directory containing kernel and modules |
| bootfile="kernel" | Kernel name (possibly absolute path) |
| kernel_options="" | Flags to be passed to the kernel |
| loader_conf_files="/boot/device.hints /boot/loader.conf /boot/loader.conf.local" | |
| nextboot_conf="/boot/nextboot.conf" | |
| nextboot_enable="NO" | |
| verbose_loading="NO" | Set to YES for verbose loader output |
Splash screen configuration
| Variable | Description |
|---|---|
| splash_bmp_load="NO" | Set this to YES for bmp splash screen! |
| splash_pcx_load="NO" | Set this to YES for pcx splash screen! |
| splash_txt_load="NO" | Set this to YES for TheDraw splash screen! |
| vesa_load="NO" | Set this to YES to load the vesa module |
| bitmap_load="NO" | Set this to YES if you want splash screen! |
| bitmap_name="splash.bmp" | Set this to the name of the file |
| bitmap_type="splash_image_data" | and place it on the module_path |
Screen saver modules
| Variable | Description |
|---|---|
| This is best done in rc.conf | |
| screensave_load="NO" | Set to YES to load a screensaver module |
| screensave_name="green_saver" | Set to the name of the screensaver module |
Random number generator configuration
| Variable | Description |
|---|---|
| See rc.conf(5). The entropy_boot_file config variable must agree with the settings below. | |
| entropy_cache_load="YES" | Set this to NO to disable loading entropy at boot time |
| entropy_cache_name="/boot/entropy" | Set this to the name of the file |
| entropy_cache_type="boot_entropy_cache" | Required for the kernel to find the boot-time entropy cache. This must not change value even if the _name above does change! |
RAM Blacklist configuration
| Variable | Description |
|---|---|
| ram_blacklist_load="NO" | Set this to YES to load a file containing a list of addresses to exclude from the running system. |
| ram_blacklist_name="/boot/blacklist.txt" | Set this to the name of the file |
| ram_blacklist_type="ram_blacklist" | Required for the kernel to find the blacklist module |
Microcode loading configuration
| Variable | Description |
|---|---|
| cpu_microcode_load="NO" | Set this to YES to load and apply a microcode update file during boot. |
| cpu_microcode_name="/boot/firmware/ucode.bin" | Set this to the microcode update file path. |
| cpu_microcode_type="cpu_microcode" | Required for the kernel to find the microcode update file. |
ACPI settings
| Variable | Description |
|---|---|
| acpi_dsdt_load="NO" | DSDT Overriding |
| acpi_dsdt_type="acpi_dsdt" | Don't change this |
| acpi_dsdt_name="/boot/acpi_dsdt.aml" | Override DSDT in BIOS by this file |
| acpi_video_load="NO" | Load the ACPI video extension driver |
Audit settings
| Variable | Description |
|---|---|
| audit_event_load="NO" | Preload audit_event config |
| audit_event_name="/etc/security/audit_event" | |
| audit_event_type="etc_security_audit_event" |
Initial memory disk settings
| Variable | Description |
|---|---|
| #mdroot_load="YES" | The "mdroot" prefix is arbitrary. |
| #mdroot_type="md_image" | Create md(4) disk at boot. |
| #mdroot_name="/boot/root.img" | Path to a file containing the image. |
| #rootdev="ufs:/dev/md0" | Set the root filesystem to md(4) device. |
Loader settings
| Variable | Description |
|---|---|
| #loader_delay="3" | Delay in seconds before loading anything. Default is unset and disabled (no delay). |
| #autoboot_delay="10" | Delay in seconds before autobooting, -1 for no user interrupts, NO to disable |
| #password="" | Prevent changes to boot options |
| #bootlock_password="" | Prevent booting (see check-password.4th(8)) |
| #geom_eli_passphrase_prompt="NO" | Prompt for geli(8) passphrase to mount root |
| bootenv_autolist="YES" | Auto populate the list of ZFS Boot Environments |
| #beastie_disable="NO" | Turn the beastie boot menu on and off |
| efi_max_resolution="1x1" | Set the max resolution for EFI loader to use:
|
| #kernels="kernel kernel.old" | Kernels to display in the boot menu |
| kernels_autodetect="YES" | Auto-detect kernel directories in /boot |
| #loader_logo="orbbw" | Desired logo: orbbw, orb, fbsdbw, beastiebw, beastie, none |
| #comconsole_speed="9600" | Set the current serial console speed |
| #console="vidconsole" | A comma separated list of console(s) |
| #currdev="disk1s1a" | Set the current device |
| module_path="/boot/modules;/boot/dtb;/boot/dtb/overlays" | Set the module search path |
| module_blacklist="drm drm2 radeonkms i915kms amdgpu" | Loader module blacklist |
| #prompt="\\${interpret}" | Set the command prompt |
| #root_disk_unit="0" | Force the root disk unit number |
| #rootdev="disk1s1a" | Set the root filesystem |
| #dumpdev="disk1s1b" | Set a dump device early in the boot process |
| #tftp.blksize="1428" | Set the RFC 2348 TFTP block size. If the TFTP server does not support RFC 2348, the block size is set to 512. Valid: (8,9007) |
| #twiddle_divisor="1" | >1 means slow down the progress indicator. |
Kernel settings
| Variable | Description |
|---|---|
| The following boot_ variables are enabled by setting them to any value. Their presence in the kernel environment (see kenv(1)) has the same effect as setting the given boot flag (see boot(8)). | |
| #boot_askname="" | -a: Prompt the user for the name of the root device |
| #boot_cdrom="" | -C: Attempt to mount root file system from CD-ROM |
| #boot_ddb="" | -d: Instructs the kernel to start in the DDB debugger |
| #boot_dfltroot="" | -r: Use the statically configured root file system |
| #boot_gdb="" | -g: Selects gdb-remote mode for the kernel debugger |
| #boot_multicons="" | -D: Use multiple consoles |
| #boot_mute="" | -m: Mute the console |
| #boot_pause="" | -p: Pause after each line during device probing |
| #boot_serial="" | -h: Use serial console |
| #boot_single="" | -s: Start system in single-user mode |
| #boot_verbose="" | -v: Causes extra debugging information to be printed |
| #init_path="/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init" | Sets the list of init candidates |
| #init_shell="/bin/sh" | The shell binary used by init(8). |
| #init_script="" | Initial script to run by init(8) before chrooting. |
| #init_chroot="" | Directory for init(8) to chroot into. |
Kernel tunables
| Variable | Description |
|---|---|
| #hw.physmem="1G" | Limit physical memory. See loader(8) |
| #kern.dfldsiz="" | Set the initial data size limit |
| #kern.dflssiz="" | Set the initial stack size limit |
| #kern.hz="100" | Set the kernel interval timer rate |
| #kern.maxbcache="" | Set the max buffer cache KVA storage |
| #kern.maxdsiz="" | Set the max data size |
| #kern.maxfiles="" | Set the sys. wide open files limit |
| #kern.maxproc="" | Set the maximum of processes |
| #kern.maxssiz="" | Set the max stack size |
| #kern.maxswzone="" | Set the max swmeta KVA storage |
| #kern.maxtsiz="" | Set the max text size |
| #kern.maxusers="32" | Set size of various static tables |
| #kern.msgbufsize="65536" | Set size of kernel message buffer |
| #kern.nbuf="" | Set the number of buffer headers |
| #kern.ncallout="" | Set the maximum of timer events |
| #kern.ngroups="1023" | Set the maximum of supplemental groups |
| #kern.sgrowsiz="" | Set the amount to grow stack |
| #kern.cam.boot_delay="10000" | Delay (in ms) of root mount for CAM bus registration, useful for USB sticks as root |
| #kern.cam.scsi_delay="2000" | Delay (in ms) before probing SCSI |
| #kern.ipc.maxsockets="" | Set the maximum number of sockets available |
| #kern.ipc.nmbclusters="" | Set the number of mbuf clusters |
| #kern.ipc.nsfbufs="" | Set the number of sendfile(2) bufs |
| #net.inet.tcp.tcbhashsize="" | Set the value of TCBHASHSIZE |
| #vfs.root.mountfrom="" | Specify root partition |
| #vm.kmem_size="" | Sets the size of kernel memory (bytes) |
| #debug.kdb.break_to_debugger="0" | Allow console to break into debugger. |
| #debug.ktr.cpumask="0xf" | Bitmask of CPUs to enable KTR on |
| #debug.ktr.mask="0x1200" | Bitmask of KTR events to enable |
| #debug.ktr.verbose="1" | Enable console dump of KTR events |
Module loading syntax example
| Variable | Description |
|---|---|
| #module_load="YES" | loads module "module" |
| #module_name="realname" | uses "realname" instead of "module" |
| #module_type="type" | passes "-t type" to load |
| #module_flags="flags" | passes "flags" to the module |
| #module_before="cmd" | executes "cmd" before loading the module |
| #module_after="cmd" | executes "cmd" after loading the module |
| #module_error="cmd" | executes "cmd" if load fails |
GhostBSD defaults
Accept the wifi firmware license
legal.intel_ipw.license_ack=1 legal.intel_iwi.license_ack=1 legal.realtek.license_ack=1
Show keystokes for passphrases
kern.geom.eli.visible_passphrase=2
Skip the often slow memory tests in VMs
hw.memtest.tests=0
don't waste time on probing USB at early boot
hw.usb.no_boot_wait="1"
Load geom support
crypto_load="YES" geom_eli_load="YES"
Enable hardware crypto
aesni_load="YES"
Set ipfw to default accept
net.inet.ip.fw.default_to_accept="1"
Set the brand/loader logo
loader_brand="GhostBSD" loader_logo="none" loader_menu_title="Welcome to GhostBSD"
Speed up boot time
autoboot_delay="02"
We use OpenRC instead of rc.d
rc_system="openrc"
