#222 Partition map is not detected

[Anton Kukoba]

I have a drive image which initially had mac partitioning, then it was formatted to have plain MBR. For this drive image partition type is not detected by mmls:
Cannot determine partition type (Mac or DOS at 0)
I've debugged mmls code and I can see, that tsk_vs_open() calls tsk_vs_dos_open() and makes set = "DOS". Then it calls tsk_vs_mac_open() also gets valid result, and due to it has detected "DOS" previously it doesn't report any of those results because it's ambigous.

Verbose output from mmls:

tsk_img_open: Type: 0 NumImg: 1 Img1: D:\H0.E01
ewf_open: found 218 segment files via libewf_glob
dos_load_prim: Table Sector: 0
ewf_image_read: byte offset: 0 len: 65536
dos_load_prim_table: Testing FAT/NTFS conditions
load_pri:0:0 Start: 2048 Size: 976766976 Type: 7
load_pri:0:1 Start: 0 Size: 0 Type: 0
load_pri:0:2 Start: 0 Size: 0 Type: 0
load_pri:0:3 Start: 0 Size: 0 Type: 0
bsd_load_table: Table Sector: 1
gpt_load_table: Sector: 0
gpt_open: Trying other sector sizes
gpt_open: Trying sector size: 512
gpt_load_table: Sector: 0
gpt_open: Trying sector size: 1024
gpt_load_table: Sector: 0
gpt_open: Trying sector size: 2048
gpt_load_table: Sector: 0
gpt_open: Trying sector size: 4096
gpt_load_table: Sector: 0
gpt_open: Trying sector size: 8192
gpt_load_table: Sector: 0
sun_load_table: Trying sector: 0
sun_load_table: Trying sector: 1
mac_load_table: Sector: 1
mac_load: 0 Starting Sector: 1 Size: 63 Type: Apple_partition_map Status: 3
mac_load: 1 Starting Sector: 64 Size: 262144 Type: Apple_Free Status: 0
mac_load: 2 Starting Sector: 262208 Size: 976510952 Type: Apple_HFS Status: 1073741875
mac_load: 3 Starting Sector: 976773160 Size: 7 Type: Apple_Free Status: 0
Cannot determine partition type (Mac or DOS at 0)

TSK 4.1.2 (built from source code) Platform: Windows 7 x64.

Attached the 5 first sectors of this drive