맥북에서 Bootable CentOS USB 만들기

맥북에서 부팅되는 CentOS USB 드라이브 만드는 방법이다.

1. CentOS 홈페이지에서 원하는 IOS 이미지를 내려 받는다.
 - https://www.centos.org/download/

2. hdiutil을 이용해서 UDRW 형태 이미지로 변형한다.
# hdiutil convert -format UDRW -o temporary.img CentOS-xxxx.iso

**

UDRW - UDIF read/write image

3 dd를 통해서 이미지를 굽는다.
설치할 디스크 장치명 확인
# diskutier list
대상 디스크 언마운트 하기
# diskutil unmountDisk /dev/diskX
2번 과정에서 만든 이미지를 굽기
# sudo dd if=temporary.img.dmg of=/dev/diskX bs=1m

**

CentOS 6.7 기준 실제 작업한 내용

$ diskutil list

/dev/disk0 (internal, physical):

…

/dev/disk1 (internal, virtual):

…

/dev/disk2 (external, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:     FDisk_partition_scheme                        *15.6 GB    disk2

   1:                 DOS_FAT_32 UNTITLED 1              15.6 GB    disk2s1

$ time sudo dd if=target.img.dmg of=/dev/disk2 bs=1m

Password:

3715+0 records in

3715+0 records out

3895459840 bytes transferred in 5414.762327 secs (719415 bytes/sec)

real 90m23.357s

user 0m0.024s

sys 0m54.548s

90분이 소요 되었다.
더 낳은 USB를 사용 해보니 결과는 7분 정도로 가능했다.

real 6m58.033s
user 0m0.020s
sys 0m18.291s

Read More

somethings about linux

Referred link:

http://www.tecmint.com/install-google-chrome-on-redhat-centos-fedora-linux/

Step 1: Enable Google YUM repository

Create a file called /etc/yum.repos.d/google-chrome.repo and add the following lines of code to it.

[google-chrome]
name=google-chrome
baseurl=http://dl.google.com/linux/chrome/rpm/stable/$basearch
enabled=1
gpgcheck=1
gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub

Step 2: Installing Chrome Web Browser

Download and Install Chrome Web Browser with yum command. It will automatically install all dependencies.

# yum install google-chrome-stable

Update : Sadly, the Google Chrome browser no longer supports the most famous commercial distribution Red Hat and its free clones such as CentOS and Scientific Linux.

Yes, they’ve discontinued support for RHEL 6.X version as of Google Chrome and on other side, latest Firefox and Opera browsers run successfully on the same platforms.

Luckily, there is a script developed by Richard Lloyd, that automatically download and install latest Google Chrome browser by picking libraries from a more recent released distro and put those libraries in (/opt/google/chrome/lib) directory and then you can able to runGoogle Chrome on CentOS 6.X version.

# wget http://chrome.richardlloyd.org.uk/install_chrome.sh
# chmod u+x install_chrome.sh
# ./install_chrome.sh

This is trying upgrade OS.!!

Read More