Currently TARGET_DIR is set to $BUILD_DIR/$MODEL where BUILD_DIR is set to pwd.
It results in file conflicts when the mk_sdboot.sh script is called for the same artik model more than once.

Preferable solution is to use mktemp -d for TARGET_DIR and set BUILD_DIR to the actual script path not pwd so that the mk_sdboot.sh could be called from any location.

when i tried to followed this link:https://wiki.tizen.org/wiki/Booting_Tizen_3.0_From_microSD_On_ARTIK to flash Tizen into SD Card in "Format your microSD" step, I got an error: sfdisk: unrecognized option '--in-order'.

Here is the full trace:

=== Start /dev/sdb format ===
7386

Label dev size

boot /dev/sdb1 32 MB
modules /dev/sdb2 32 MB
rootfs /dev/sdb3 2048 MB
[Extend] /dev/sdb4
system-data /dev/sdb5 256 MB
user /dev/sdb6 5014 MB
Remove partition table...
1+0 records in
1+0 records out
512 bytes copied, 0.00143832 s, 356 kB/s
sfdisk: unrecognized option '--in-order'

Usage:
sfdisk [options] [[-N] ]
sfdisk [options]

Display or manipulate a disk partition table.

Commands:
-A, --activate [ ...] list or set bootable MBR partitions
-d, --dump dump partition table (usable for later input)
-J, --json dump partition table in JSON format
-g, --show-geometry [ ...] list geometry of all or specified devices
-l, --list [ ...] list partitions of each device
-F, --list-free [ ...] list unpartitions free areas of each device
-s, --show-size [ ...] list sizes of all or specified devices
-T, --list-types print the recognized types (see -X)
-V, --verify [ ...] test whether partitions seem correct

--part-label [] print or change partition label
--part-type [] print or change partition type
--part-uuid [] print or change partition uuid
--part-attrs [] print or change partition attributes

device (usually disk) path
partition number
partition type, GUID for GPT, hex for MBR

Options:
-a, --append append partitions to existing partition table
-b, --backup backup partition table sectors (see -O)
--bytes print SIZE in bytes rather than in human readable format
-f, --force disable all consistency checking
--color[=] colorize output (auto, always or never)
colors are enabled by default
-N, --partno specify partition number
-n, --no-act do everything except write to device
--no-reread do not check whether the device is in use
-O, --backup-file override default backup file name
-o, --output output columns
-q, --quiet suppress extra info messages
-X, --label specify label type (dos, gpt, ...)
-Y, --label-nested specify nested label type (dos, bsd)

-L, --Linux deprecated, only for backward compatibility
-u, --unit S deprecated, only sector unit is supported

-h, --help display this help and exit
-v, --version output version information and exit

Available columns (for -o):
gpt: Device Start End Sectors Size Type Type-UUID Attrs Name UUID
dos: Device Start End Sectors Cylinders Size Type Id Attrs Boot End-C/H/S
Start-C/H/S
bsd: Slice Start End Sectors Cylinders Size Type Bsize Cpg Fsize
sgi: Device Start End Sectors Cylinders Size Type Id Attrs
sun: Device Start End Sectors Cylinders Size Type Id Flags

For more details see sfdisk(8).