htc desire cat /proc/mtd && cat /proc/partitions

cat /proc/mtd
dev:    size   erasesize  name
mtd0: 000a0000 00020000 "misc"
mtd1: 00500000 00020000 "recovery"
mtd2: 00280000 00020000 "boot"
mtd3: 0e600000 00020000 "system"
mtd4: 02800000 00020000 "cache"
mtd5: 0a7a0000 00020000 "userdata"

cat /proc/partitions
major minor  #blocks  name

  31        0        640 mtdblock0
  31        1       5120 mtdblock1
  31        2       2560 mtdblock2
  31        3     235520 mtdblock3
  31        4      40960 mtdblock4
  31        5     171648 mtdblock5