Don’t know what ReAgentC is or how to use it? This is your guide.
Do you know how to use ReAgentC and setup the built-in windows recovery partition?— Chris Titus Tech (@christitustech) October 24, 2022
Create Recovery Partition at least 1GB in size.
Format the recovery partition as NTFS
- select disk 0 - select partition 3 (last partition) - detail partition (list partition details) - set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac" (GPTDisk) _Note: id=27 on MBR_ NOTE: Reset ids to normal if you did the WRONG partition (MBR set id=7 and GPT set id="ebd0a0a2-b9e5-4433-87c0-68b6b72699c7") - _Create Partition if Missing!_ `cre par pri size=605 id=de94bba4-06d1-4d40-a16a-bfd50179d6ac` - `format fs=ntfs quick label=WinRE` - `assign letter=z` - UEFI only: `gpt attributes=0x8000000000000001`
WinRE.wim is installed on local system
ls "C:\Windows\System32\Recovery" | FindStr /I "WinRE.wim" ; ls "C:\Windows\System32\Recovery" -Hidden | FindStr /I "WinRE.wim"
5a. If Missing, Copy WinRE.wim and the uninitialized ReAgent.xml files from the installation Media (Easiest method is to use 7zip to extract
reagentc /enable (this will move WinRe.wim to the Recovery partition and set the GUID and location in ReAgent.xml)
reagentc /info (Check settings for verification)
ReAgentC /SetREimage /Path "Z:\Recovery\WindowsRE"
If you can boot in to Windows, hold shift while pressing restart. This will reboot your PC into a menu. Select Advanced Options
Another method to reach this screen is to have the boot fail 3 times. A reboot during the load screen will count as a failure.
F8 is an older method that doesn’t work unless enabled, but was a great way to get to the menu. I’m adding this to my Windows Utility Tweaks section.
Startup Repair almost never works, but once in a blue moon is beneficial. Startup Settings can send you to safe mode.
Here are the highlights of a recovery partition:
dism /image:c:\ /cleanup-image /restorehealth)
Bad update and now it doesn’t work? Click this and revert it!
Loads into BIOS. Can be useful on laptops where you don’t know key combination when powering on.
I don’t use these much, but can be a good last resort option. System Restore generally brings most of the system back to last restore point and System Image is good for recovering Windows if you used the built-in Windows Backup Software to external hard drive.