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“recovery\n”之后的部分,是/cache/recovery/command支持的命令。可以将其理解为Recovery操作过程中对命令操作的备份。Recovery对其操作的过程为:先读取BCB然后读取/cache/recovery/command,然后将二者重新写回BCB,这样在进入Main system之前,确保操作被执行。在操作之后进入Main system之前,Recovery又会清空BCB的command域...
至此,Main System就开始重启并进入Recovery模式。在这之前Main System做的最实质的就是两件事,一是将“boot-recovery”写入BCB的command域,二是将--update_package=/cache/update.zip”或则“--update_package=/sdcard/update.zip”写入/cache/recovery/command文件中。下面的部分就开始重启并进入Recovery服务了。 二...
并写入到/cache/recovery/intent中--update_package=root:path//verify install an OTA package file Main system将这条命令写入时,代表系统需要升级,在进入Recovery模式后,将该文件中的命令读取并写入BCB中,然后进行相应的更新update.zip包的操作。
Android系统Recovery工作原理之使用update.zip升级过程分析(七)---Recovery服务的核心install_package函数 一、 Recovery服务的核心install_package(升级update.zip特有) 和Recovery服务中的wipe_data、wipe_cache不同,install_package()是升级update.zip特有的一部分,也是最核心的部分。在这一步才真正开始...
A/B升级又称静默升级,它是一种在系统运行过程中进行的升级功能。为了减小系统运行负荷,整个升级过程会保持在一个较低的IO状态,所以升级时间比recovery升级明显要长。本文是基于Android 12 AOSP源码,对update engine模块的流程进行梳理,最主要的内容是绘制的几张序列图。
DISM is a command-line tool that is used to service and repair Windows images, including the Windows Recovery Environment, Windows Setup, and Windows PE (WinPE). It can also be used to repair the local Windows image on your computer. ...
Microsoft Azure Site Recovery Unified Setup (VMware to Azure) (version 9.35.xxxx.x or a later version) Microsoft Azure Recovery Services Agent (version 2.0.8900.0 or a later version) Note:You can check the installed provider version in the Programs and Features item in Control Panel. ...
DISM is a command-line tool that is used to service and repair Windows images, including the Windows Recovery Environment, Windows Setup, and Windows PE (WinPE). It can also be used to repair the local Windows image on your computer. ...
Here's a quick rundown of what's new in Windows 11 and whether or not it's worth upgrading from Windows 10. One of the biggest changes in Windows 11 is the new interface. Microsoft has redesigned the Start menu and taskbar, as well as introducing a new Action Center. Another major ch...