Welcome to fdisk (util-linux 2.25.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): Disk /dev/mmcblk0: 7.5 GiB, 8068792320 bytes, 15759360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x3c2bcb52
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 8192 137215 129024 63M c W95 FAT32 (LBA)
/dev/mmcblk0p2 137216 15759359 15622144 7.5G 83 Linux
Command (m for help): Partition number (1,2, default 2):
Partition 2 has been deleted.
Command (m for help): Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p): Partition number (2-4, default 2): First sector (2048-15759359, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (137216-15759359, default 15759359):
Created a new partition 2 of type 'Linux' and of size 7.5 GiB.
Command (m for help): Disk /dev/mmcblk0: 7.5 GiB, 8068792320 bytes, 15759360 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x3c2bcb52
Device Boot Start End Sectors Size Id Type
/dev/mmcblk0p1 8192 137215 129024 63M c W95 FAT32 (LBA)
/dev/mmcblk0p2 137216 15759359 15622144 7.5G 83 Linux
Command (m for help): The partition table has been altered.
Calling ioctl() to re-read partition table.
Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
On a fresh image of Raspbian 4.4, I get this error when trying to expand filesystem:
pi@raspberrypi:~ $ sudo raspi-config --expand-rootfs
Welcome to fdisk (util-linux 2.25.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command.
Command (m for help): Disk /dev/mmcblk0: 7.5 GiB, 8068792320 bytes, 15759360 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x3c2bcb52
Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 137215 129024 63M c W95 FAT32 (LBA) /dev/mmcblk0p2 137216 15759359 15622144 7.5G 83 Linux
Command (m for help): Partition number (1,2, default 2): Partition 2 has been deleted.
Command (m for help): Partition type p primary (1 primary, 0 extended, 3 free) e extended (container for logical partitions) Select (default p): Partition number (2-4, default 2): First sector (2048-15759359, default 2048): Last sector, +sectors or +size{K,M,G,T,P} (137216-15759359, default 15759359): Created a new partition 2 of type 'Linux' and of size 7.5 GiB.
Command (m for help): Disk /dev/mmcblk0: 7.5 GiB, 8068792320 bytes, 15759360 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x3c2bcb52
Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 137215 129024 63M c W95 FAT32 (LBA) /dev/mmcblk0p2 137216 15759359 15622144 7.5G 83 Linux
Command (m for help): The partition table has been altered. Calling ioctl() to re-read partition table. Re-reading the partition table failed.: Device or resource busy
The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8).
Please reboot pi@raspberrypi:~ $
Is that expected?