Add troubleshooting for root patch reversion in recovery

docs/TROUBLESHOOTING.md

@@ -6,6 +6,7 @@ Here are some common errors that users may experience while using this patcher:
 * [Stuck on `This version of Mac OS X is not supported on this platform` or (🚫) Prohibited Symbol](#stuck-on-this-version-of-mac-os-x-is-not-supported-on-this-platform-or-(🚫)-prohibited-symbol)
 * [Cannot boot macOS without the USB](#cannot-boot-macos-without-the-usb)
 * [Infinite Recovery OS Booting](#infinite-recovery-os-reboot)
+* [Stuck on boot after root patching](#stuck-on-boot-after-root-patching)
 * [Reboot when entering Hibernation (`Sleep Wake Failure`)](#reboot-when-entering-hibernation-sleep-wake-failure)
 * [How to Boot Recovery through OpenCore Legacy Patcher](#how-to-boot-recovery-through-opencore-legacy-patcher)
 * [Stuck on "Your Mac needs a firmware update"](#stuck-on-your-mac-needs-a-firmware-update)
@@ -51,6 +52,18 @@ With OpenCore Legacy Patcher, we rely on Apple Secure Boot to ensure OS updates
 
 * Note: Machines with modified root volumes will also result in an infinite recovery loop until integrity is restored.
 
+## Stuck on boot after root patching
+
+Boot into recovery by pressing space when your disk is selected on the OCLP bootpicker (if you have it hidden, hold ESC while starting up)
+Go into terminal and type the following:
+```sh
+mount -uw /Volumes/Macintosh\ HD
+bless --mount /Volumes/Macintosh\ HD --bootefi -last-sealed-snapshot
+```
+If your disk name is something else than "Macintosh HD", make sure to change the path accordingly.
+
+Then restart and now your system should be restored to the unpatched snapshot and should be able to boot again.
+
 ## Reboot when entering Hibernation (`Sleep Wake Failure`)
 
 [Known issue on some models](https://github.com/dortania/Opencore-Legacy-Patcher/issues/72), a temporary fix is to disable Hibernation by executing the following command in the terminal:
@@ -172,4 +185,4 @@ Applicable models include:
 | Mac Pro     | Mid 2010 and older   | MacPro3,1 - MacPro5,1         |                                                  |
 
 
-![](../images/usb11-chart.png)
+![](../images/usb11-chart.png)