金士顿的 U盘值得买吗？声音
金士顿的 U盘以销量和好评著称，一致在用闪迪和东芝的 U盘和存储觉得很不错。但金士顿的这款 U盘在京东全网销量第一，价钱还稍微贵一点，好评如潮，有的差评还被水军喷成狗屎💩，我现在还得再喷一喷，水军们别给我讲理想环境下怎么样，这世界没有理想环境，只有实际环境，差就是差，简直就是垃圾。
这款 U盘写入和读取速度极不稳定，比正弦波还要波动的厉害，动不动就跌入谷底的速度，可想而知。这样的垃圾存储是怎么做到全网销量第一，好评如潮的？
我拷贝了一个视频装在这个 U盘里，插入小米电视，播放的时候有时候需要加载一会儿，你说烂不烂。
买来的时候是 FAT32，格式化为 exFAT，速度更慢了。
我之前好像是看到一款金士顿的产品，保修是终身保修，所以对这个牌子情有独钟；这次买的这款并不是终身保修，感觉是被坑了。
大疆无人机入门注意事项院内
入坑大疆无人机，满满的干货，希望能给你带来不一样的感觉。
降落时候绕飞机半周，此举用来判断飞机的降落位置。一般情况下，飞机下降时候会稍微后退一点，也可能是站在飞机后面时眼睛的错觉。这一点是很重要的！！！
条件满足的情况下，尽量选择使用精准记录起飞点，然后精准降落。试过这个精准降落，非常准，能正确的降落在起飞时候的硬纸板上。
将 DJI GO 4 APP 缓存大小设置为自动，默认为 2G，这点大疆的设计实在是坑，默认应该是自动才对。现在这个年代，能飞无人机，没有个 256G 存储的手机是不是 out 了。
录像和拍照，按遥控器上的按钮第一次是切换，第二次才是开始录像，这点要注意屏幕上的状态。录像的时候，机身内存不足，录像会自动停止，停止之后并不会默认开启缓存到手机上，这个也是大疆 APP 默认设计的不够好的地方，内存不足，应该默认自动切换到手机缓存录像模式，这个时候需要手动点一下录像按钮，才开始缓存到手机上，对于要求不高的情况下，缓存的 1080p 视频是足够清晰且满足要求的了。
pacman error: audit: signature from is unknown trust技术
使用 pacman 更新系统报错怎么办？更新是个麻烦事，长时间不更新一更新就容易出各种问题。
pacman -Syu error: audit: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust
error: audit: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/audit-2.8.4-2-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: libtiff: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/libtiff-4.0.10-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: autoconf-archive: signature from "Eli Schwartz <eschwartz@archlinux.org>" is unknown trust :: File /var/cache/pacman/pkg/autoconf-archive-1:2019.01.06-1-any.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: ctags: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/ctags-1:r20181015+g45968eff-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: patch: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/patch-2.7.6-7-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: vim-runtime: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/vim-runtime-8.1.0751-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: gvim: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/gvim-8.1.0751-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: libplacebo: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/libplacebo-1.7.0-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: strongswan: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/strongswan-5.7.1-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: aribb24: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/aribb24-1.0.3-2-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: vlc: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/vlc-3.0.6-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: wget: signature from "Levente Polyak (anthraxx) <levente@leventepolyak.net>" is unknown trust :: File /var/cache/pacman/pkg/wget-1.20.1-1-x86_64.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)). Do you want to delete it? [Y/n] n error: failed to commit transaction (invalid or corrupted package) Errors occurred, no packages were upgraded.
把 Windows7 装进 U 盘方法技术
如何把 windows 装进优盘，本篇给你帮助。
啰嗦一点，其实从 win8 开始微软 windows 操作系统对于优盘的支持好了很多，装进优盘那是非常方便的，直接 dd 一个命令就刻录好了 U 盘安装盘，直接装就可以了。但是为什么我不选择 win10 装进 U 盘呢？你想，你都用 win10 了，那肯定是新电脑，当然没有这个必要啦。对于我这种拥有老古董机器的人来说，win7 比较适合；而另外一个原因就是 win10 对于硬件的要求太高，即使装成功了，在 USB 口的老机器上仍然是启动不了的，只能是卡在开机 logo 那里转圈圈。
对于 win7 以及以下的操作系统装进 U 盘里面是比较难的。不像 Linux 系列发行版那样的友好。win7 的安装盘无法识别 USB 存储介质，所以安装盘本身需要添加驱动支持。