win10修改hosts文件保存不了，提示写保护_hosts is write-protected

访问github总是访问不了，科学上网的方法也时灵时不灵。网上普遍的修改hosts文件，但是我却怎么也保存不了修改的hosts文件，有人说用管理员权限或者提升用户的操作权限，但是我依然保存不了hosts文件。

忽然有一天，被GitHub的timing out逼疯的我再次尝试修改hosts，然后发现了个小细节，去掉只读就能保存hosts文件了（严重怀疑我之前改不了都是因为勾了只读。。。）

另外附上github的最新hosts内容

# GitHub520 Host Start
140.82.113.25                 alive.github.com
140.82.113.25                 live.github.com
185.199.108.154               github.githubassets.com
140.82.112.22                 central.github.com
185.199.108.133               desktop.githubusercontent.com
185.199.108.153               assets-cdn.github.com
185.199.108.133               camo.githubusercontent.com
185.199.108.133               github.map.fastly.net
199.232.69.194                github.global.ssl.fastly.net
140.82.114.3                  gist.github.com
185.199.108.153               github.io
140.82.113.4                  github.com
192.0.66.2                    github.blog
140.82.112.6                  api.github.com
185.199.108.133               raw.githubusercontent.com
185.199.108.133               user-images.githubusercontent.com
185.199.108.133               favicons.githubusercontent.com
185.199.108.133               avatars5.githubusercontent.com
185.199.108.133               avatars4.githubusercontent.com
185.199.108.133               avatars3.githubusercontent.com
185.199.108.133               avatars2.githubusercontent.com
185.199.108.133               avatars1.githubusercontent.com
185.199.108.133               avatars0.githubusercontent.com
185.199.108.133               avatars.githubusercontent.com
140.82.113.9                  codeload.github.com
52.217.32.164                 github-cloud.s3.amazonaws.com
52.217.164.49                 github-com.s3.amazonaws.com
52.217.164.49                 github-production-release-asset-2e65be.s3.amazonaws.com
52.216.134.83                 github-production-user-asset-6210df.s3.amazonaws.com
52.217.105.188                github-production-repository-file-5c1aeb.s3.amazonaws.com
185.199.108.153               githubstatus.com
64.71.144.202                 github.community
23.100.27.125                 github.dev
140.82.112.22                 collector.github.com
13.107.43.16                  pipelines.actions.githubusercontent.com
185.199.108.133               media.githubusercontent.com
185.199.108.133               cloud.githubusercontent.com
185.199.108.133               objects.githubusercontent.com
 
 
# Update time: 2022-03-04T20:06:32+08:00
# Update url: https://raw.hellogithub.com/hosts
# Star me: https://github.com/521xueweihan/GitHub520
# GitHub520 Host End