Commits on Sep 4, 2024

1. boot_from_usb_device.cfg: Update regex …

   - The Problem
   The test guest_os_booting.boot_order.usb_device.block_device
   looks for a regex to see if the usb boot device is being booted
   first.
   
   If the usb device is blank, edk2 will reorder the boot order,
   to deprioritize the usb device. And it won't print it first
   in the boot order.
   
   - The Solution
   
   We can see that it attempts to boot from the usb
   if we see edk2 printing the "USB_BOOT_TEST_UNIT_READY"
   command output.
   
   ```
   UsbBootExecCmd: Success to Exec 0x0 Cmd (Result = 1)
   ```
   
   Cmd 0x0: Test Unit Ready Opcode
   Result = 1: The unit was ready for further commands
   
   This is printed when edk2 is asking the USB device
   if it is ready to recieve further commands.
   
   We can simply test for this output to see if
   edk2 considered the usb device for booting.
   
   Signed-off-by: Slancaster1 <[email protected]>

   

   Slancaster1 committed Sep 4, 2024
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