fix writing by using a virtual image instead of a physical thumbdrive, better document the hack in KeIrqDispatch

readme.md

@@ -26,11 +26,9 @@ It boots into a shell.
 
 ## how 2 build
 
-* open env variables
-* set `NTLITE_DRIVE` as your thumbdrive (ex. `G:`)
-* set `NTLITE_NTPATH` as your thumbdrive (ex. `\\.\PhysicalDrive7`)
-* open vs x64 build tools
+* open vs x64 build tools as admin
 * cd into this directory
+* `mkimage.bat`
 * `build.bat`
 * `run.bat`(ide)/`rund.bat`(ide, debug)/`runa.bat`(ahci)/`runad.bat`(ahci, debug)
 * enjoy