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創(chuàng)建 Ubuntu 根文件系統(tǒng)

準(zhǔn)備工作

安裝qemu

在Linux PC主機(jī)上安裝模擬器：

sudo apt-get install qemu-user-static

下載和解壓 ubuntu-core

Firefly-rk3399 ubuntu根文件系統(tǒng)是基于Ubuntu base 16.04來(lái)創(chuàng)建的。用戶可以到ubuntu cdimg 下載，選擇下載ubuntu-base-16.04.1-base-arm64.tar.gz 。

下載完之后，創(chuàng)建臨時(shí)文件夾并解壓根文件系統(tǒng)：

mkdir temp sudo tar -xpf ubuntu-base-16.04.1-base-arm64.tar.gz -C temp

修改根文件系統(tǒng)

準(zhǔn)備工作

準(zhǔn)備網(wǎng)絡(luò)：

sudo cp -b /etc/resolv.conf temp/etc/resolv.conf

準(zhǔn)備qemu

sudo cp /usr/bin/qemu-aarch64-static temp/usr/bin/

進(jìn)入根文件系統(tǒng)進(jìn)行操作：

sudo chroot temp

更新及安裝

更新：

apt update apt upgrade

安裝自己需要的功能

apt install vim git ....(根據(jù)自己需求添加)

安裝xubuntu

apt-get install xubuntu-desktop apt-get install udev

可能出現(xiàn)錯(cuò)誤:

E: Unable to locate package xxxx

安裝包的源沒(méi)有添加到/etc/apt/source.list中,導(dǎo)致無(wú)法識(shí)別安裝包,可以自行添加源，也可以使用下面給出的source.list覆蓋原來(lái)的/etc/apt/source.list文件:

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates main restricted ## Uncomment the following two lines to add software from the 'universe' ## repository. ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://ports.ubuntu.com/ubuntu-ports/ xenial universe deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial universe deb http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-updates universe ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-backports main restricted deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security main restricted deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security universe deb http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse deb-src http://ports.ubuntu.com/ubuntu-ports/ xenial-security multiverse

添加用戶及設(shè)置密碼

添加用戶

useradd -s '/bin/bash' -m -G adm,sudo firefly

給用戶設(shè)置密碼：

passwd firefly

給root用戶設(shè)置密碼：

passwd root

修改完自己的根文件系統(tǒng)就可以退出了。

exit

制作根文件系統(tǒng)

制作自己的根文件系統(tǒng)，大小依據(jù)自己的根文件系統(tǒng)而定，注意依據(jù)temp文件夾的大小來(lái)修改count值

mkdir rootfs dd if=/dev/zero of=linuxroot.img bs=1M count=4000 mkfs.ext4 linuxroot.img sudo mount linuxroot.img rootfs/ sudo cp -rfp temp/* rootfs/ sudo umount rootfs/ e2fsck -p -f linuxroot.img resize2fs -M linuxroot.img

這樣 linuxroot.img 就是最終的根文件系統(tǒng)映像文件了。

FAQs

根文件系統(tǒng)加載后，大小不正常，未占滿整個(gè)分區(qū)：

在系統(tǒng)正確加載后執(zhí)行擴(kuò)展文件系統(tǒng)命令：

resize2fs /dev/mmcblk1p6 --> rootfs 分區(qū) 查看 parameter文件中，root= 節(jié)點(diǎn)設(shè)備

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