Упс...
Нашел причину подвисания.
У меня стоит VirtualBox и поэтому включать USB устройства приходится вручную. Это не повисание а просто ожидание.
В общем полный кабздец.
Scanning device for bad blocks
Bad eraseblock 0 at 0x000000000000
Bad eraseblock 1 at 0x000000020000
Bad eraseblock 2 at 0x000000040000
Bad eraseblock 3 at 0x000000060000
Bad eraseblock 16 at 0x000000200000
Bad eraseblock 17 at 0x000000220000
Bad eraseblock 18 at 0x000000240000
Bad eraseblock 19 at 0x000000260000
Bad eraseblock 20 at 0x000000280000
Bad eraseblock 21 at 0x0000002a0000
Bad eraseblock 22 at 0x0000002c0000
Bad eraseblock 23 at 0x0000002e0000
Bad eraseblock 24 at 0x000000300000
Bad eraseblock 25 at 0x000000320000
Bad eraseblock 26 at 0x000000340000
Bad eraseblock 28 at 0x000000380000
Bad eraseblock 29 at 0x0000003a0000
Bad eraseblock 30 at 0x0000003c0000
Bad eraseblock 31 at 0x0000003e0000
Bad eraseblock 32 at 0x000000400000
Bad eraseblock 33 at 0x000000420000
Bad eraseblock 34 at 0x000000440000
Bad eraseblock 35 at 0x000000460000
Bad eraseblock 48 at 0x000000600000