d:\miflash>fastboot flash recovery twrp.img
target reported max download size of 536870912 bytes
sending 'recovery' (51236 KB)...
OKAY [ 1.094s]
writing 'recovery'...
OKAY [ 0.235s]
finished. total time: 1.329s
d:\miflash>fastboot boot twrp.img
downloading 'boot.img'...
OKAY [ 1.110s]
booting...
OKAY [ 0.047s]
finished. total time: 1.156s