blk_rw$(nW)TEST1: START: blk_rw
$(nW)blk_rw$(nW) 512 $(nW)$(nW)testfile1 c r:0 r:1 r:4161480 r:2134997325 r:2134997326 z:0 z:4161480
512 block size 512 usable blocks 2134997326
read lba 0: {0}
read lba 1: {0}
read lba 4161480: {0}
read lba 2134997325: {0}
read lba 2134997326: Invalid argument
set_zero lba 0
set_zero lba 4161480
blk_rw$(nW)TEST1: DONE