Shrinking my root partition

[getmeoutoftech]

I'm trying to migrate /home to a separate partition that I can mount it rw while leaving root in ro.

This involves the gamble of shrinking my / partition and adding a new one behind it. It's relatively fresh install and I'll be giving root 10G out of 64 so I'm not really worried about fouling things up on the back side of /. Didn't have access to a linux box to install so the extra partitions are from NOOBS.

$this->bbcode_second_pass_code('', '$ sudo fdisk /dev/mmcblk0
command: p

Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 32768 255859 223092 109M e W95 FAT16 (LBA)
/dev/mmcblk0p2 255860 125042687 124786828 59.5G 85 Linux extended
/dev/mmcblk0p5 262144 327677 65534 32M 83 Linux
/dev/mmcblk0p6 327680 532477 204798 100M c W95 FAT32 (LBA)
/dev/mmcblk0p7 532480 125042687 124510208 59.4G 83 Linux

Commands: d 7 p

Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 32768 255859 223092 109M e W95 FAT16 (LBA)
/dev/mmcblk0p2 255860 125042687 124786828 59.5G 85 Linux extended
/dev/mmcblk0p5 262144 327677 65534 32M 83 Linux
/dev/mmcblk0p6 327680 532477 204798 100M c W95 FAT32 (LBA)

Commands: n l

Adding logical partition 7
First sector (257908-125042687, default 258048): 532480

Sector 532480 is already allocated.
First sector (534526-125042687, default 534528):
')


How is that sector allocated when I already deleted it? Do I have to write the deletion to the table before that sector is released? I'm not sure this will work unless I can put 7 back on the same initial sector so I'm a bit hesitant to be too gung ho about it.