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sortix--sortix/share/man/man7/initrd.7

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.Dd October 5, 2015
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.Dt INITRD 7
.Os
.Sh NAME
.Nm initrd
.Nd initialization ramdisk
.Sh SYNOPSIS
.Pa /boot/sortix.initrd
.Sh DESCRIPTION
.Pa /boot/sortix.initrd
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is an archive of a minimal userland loaded by the bootloader and passed to the
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.Xr kernel 7
that extracts it into the initial kernel memory root filesystem.
The kernel invokes the
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.Xr init 8
extracted from the initrd as
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.Pa /sbin/init .
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.Pp
The initrd is in the custom format made by
.Xr mkinitrd 8
and can be viewed with
.Xr initrdfs 8 .
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.Pp
The
.Xr update-initrd 8
program creates a minimal initrd that locates the root filesystem and chain
boots it as described in
.Xr init 8 .
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.Sh SEE ALSO
.Xr initrd 7 ,
.Xr kernel 7 ,
.Xr init 8 ,
.Xr initrdfs 8 ,
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.Xr mkinitrd 8 ,
.Xr update-initrd 8