No, this will not help you (will not reclaim space from sailfish partition to MyDocs). What you may also (manually) do is use sfdisk. But according to your first sentence in your post I doubt you know that tool? Show us Code: /sbin/sfdisk -l /dev/mmcblk0
/sbin/sfdisk -l /dev/mmcblk0
~# /sbin/sfdisk -l /dev/mmcblk0 Disk /dev/mmcblk0: 485120 cylinders, 4 heads, 16 sectors/track Units = cylinders of 32768 bytes, blocks of 1024 bytes, counting from 0 Device Boot Start End #cyls #blocks Id System /dev/mmcblk0p1 16 160511 160496 5135872 c W95 FAT32 (LBA) /dev/mmcblk0p2 288512 419583 131072 4194304 83 Linux /dev/mmcblk0p3 419584 485119 65536 2097152 83 Linux /dev/mmcblk0p4 160512 288511 128000 4096000 83 Linux