[Windows Mobile Software Development] atzaus:
Platformrebuilder is missing

[HKEY_LOCAL_MACHINE\System\ObjectStore\RegistryUpdate]
"packages.sof"=hex:CE,C0,92,D7,75,8D,51,65,82,29,74,97,A1,86,D4,09

"ffffffff-d7be-4b2e-b228-c5a365e4a4f6.rgu"=hex:54,3E,A0,0E,0D,8F,31,96,9F,E8,90,CD,20,47,CD,64

"cb274b02-a54d-4780-971e-b6c924548d95.rgu"=hex:E0,0C,0B,44,E8,68,51,D5,F1,EC,AD,CC,14,24,16,CD

"bd3308a8-61b4-4230-8f2a-46f90f89c1da.rgu"=hex:EE,E1,4E,18,27,94,BC,DE,57,67,1D,22,24,E4,8C,91

"a15620ee-f541-454c-99d4-ee268d67e74a.rgu"=hex:20,C7,63,77,3A,6F,D4,78,4C,A2,D4,C4,5A,30,CA,46

"52dcbada-7234-4ee7-b513-731176d5f860.rgu"=hex:36,DE,44,6E,7F,13,28,F2,A9,4D,9A,C4,2E,B8,A0,39

"362b2249-d46a-46dd-bca3-063ac8a20f42.rgu"=hex:42,55,C8,ED,8A,14,0E,EF,6A,FE,77,9B,49,F5,BB,BE

"15947029-6127-4062-bb7f-b3c8bed871ac.rgu"=hex:BF,3A,DE,FD,B2,C7,23,E7,20,46,A7,31,D0,79,E2,E0

"ed0ab1a4-a456-4fb0-ad9d-93feccf351a3.rgu"=hex:9F,87,5C,08,EE,9D,3B,7C,63,84,87,A9,2D,07,CE,B6

"ba94b89b-3bb8-4f41-bada-121dbdab1fde.rgu"=hex:5B,30,B9,F2,01,08,71,3D,B8,D3,66,3A,25,EA,64,5F

"25c125d4-0a18-487d-a709-9b4242bbf4c3.rgu"=hex:D5,6D,83,22,13,AF,54,E9,5B,89,F0,AB,5F,6C,8E,C1

"7bb5f499-6b7f-4ee0-bcb9-a89ae3fc3e2c.rgu"=hex:7E,40,AC,7E,EE,DA,45,A7,24,2A,95,20,F6,B8,D3,60

"70bf28e9-b87c-4b43-be51-e804d08276b1.rgu"=hex:B5,7B,61,31,7F,82,21,1C,97,28,A7,01,95,48,F3,53

"25f4da29-9280-48e9-8f2e-28a91294ce74.rgu"=hex:B3,81,5C,FD,58,30,E8,6E,82,58,C7,CC,2A,56,35,28

"12e09329-dd44-4d62-a5b7-25124bb2ef88.rgu"=hex:B2,75,73,7A,73,2F,4D,6E,28,E3,37,24,A7,57,1C,62

"2a6583ff-6047-46cc-b9be-b7deca1152c3.rgu"=hex:FD,D3,FF,45,32,6B,F2,18,A2,92,36,D8,90,3A,8C,AF

"208f8be6-1362-45b3-ae17-95d4ab426c11.rgu"=hex:A1,B8,8A,9F,02,E3,AC,DC,75,10,9E,DB,3D,8B,28,67

"d9d7d86d-3f83-4289-bd32-aa1972a1447e.rgu"=hex:91,F4,BA,24,CB,A6,A7,A6,4B,97,94,D9,5D,80,A8,ED

"77ab73e4-2de4-4f4e-982f-47eedf0e9e1e.rgu"=hex:47,AD,57,02,4D,EC,2B,36,8C,CB,2A,4E,47,A1,8A,42

"813fd1d1-ca6f-4b6d-96d2-c97fb99bd535.rgu"=hex:7B,E4,B7,F7,49,0B,75,63,8F,73,BB,C2,C3,B1,7F,4E

"331439cf-a636-4243-8424-e501be3a39d2.rgu"=hex:1F,1E,91,B7,4C,B1,4A,F7,6B,F9,54,BB,18,F9,CD,E4

"f3dfc36d-36d0-4163-8d6f-e1ce5aed8814.rgu"=hex:E9,4A,AC,95,E2,3C,1C,F7,1D,B7,1A,A5,C0,AF,5B,44

"f50e9a40-aed9-497a-bdea-84451210e960.rgu"=hex:61,F5,AE,07,29,B2,1D,FB,FD,5B,6A,9A,A9,2A,1A,FF

"1f1aca24-d942-464a-9281-10567741499c.rgu"=hex:01,95,A1,58,C6,36,8D,6C,AB,04,90,B8,65,7A,72,77

"f65c1b88-2732-470a-88c8-de964e9f9ca7.rgu"=hex:AA,A7,8F,20,83,62,5C,3E,20,9F,58,F0,EC,9B,3A,CA

"90f7cab5-db46-4341-b395-7aca3d47055c.rgu"=hex:2B,07,41,62,4B,34,06,36,59,57,A7,A3,C9,50,74,72

"b183f2a7-06c3-4f27-9679-7baf97e94efa.rgu"=hex:BB,31,B5,77,13,A7,72,2E,01,E8,9F,90,97,9E,26,F8

"9ca8818d-8eec-479d-a9be-81305c52d303.rgu"=hex:67,CB,72,3B,C6,00,3A,B7,75,00,53,CE,85,5B,50,EE

"d0b41563-b345-4444-aa15-986e7c7fff99.rgu"=hex:4D,F8,4F,21,62,53,7E,40,3C,49,18,25,A0,29,88,1B

"c9b03c4a-50ff-4e86-b92f-2eb3f9968eb3.rgu"=hex:C5,AF,D8,FB,0C,CA,8C,32,CD,C9,6B,04,EF,C9,55,DF

"d726fef1-c84d-40f5-9010-07a6a3fd70a7.rgu"=hex:D2,D1,2E,35,49,9D,8F,74,AD,81,63,A1,F8,95,59,CE

"e4200be3-87fc-4415-9a57-d96456c4ba10.rgu"=hex:9B,89,64,53,31,35,B3,A5,3A,82,30,1C,21,2D,9E,77

"d81b11e0-3299-4b65-8305-78f1fa03dc07.rgu"=hex:90,61,B1,93,31,CD,87,93,8F,F8,5F,C2,B7,74,2D,A8

"b51fcecc-a738-463b-93a4-7b44d03c30b7.rgu"=hex:42,FB,58,A7,ED,5B,FE,14,58,2C,9E,BA,77,D7,D7,D4

"fd7ec796-412f-4352-9a71-04da841dc265.rgu"=hex:D2,31,52,B1,1C,40,A8,3C,6E,AE,33,DC,8E,F6,CE,35

"a492bb92-210b-4933-9a65-272cc8ad9a5b.rgu"=hex:30,ED,7E,EB,9E,0D,56,A3,D2,53,7E,54,FB,82,3F,3B

"da5e9e89-c2c4-4ff9-ae88-c90a50ec09c9.rgu"=hex:59,E6,F4,3B,25,96,27,59,80,EA,BC,6D,CE,D8,98,04

"b04e8c7f-f0f6-4201-83c6-4876404128c9.rgu"=hex:7D,F2,E0,D3,38,FD,BE,11,ED,5C,10,2B,3B,70,6A,86

"d7904a7e-6226-443b-8c8c-439683b0b55a.rgu"=hex:08,0B,C8,FD,4A,AE,1C,91,76,11,79,D3,3A,AE,E0,FF

"429b237a-cc04-4166-a65b-5cd54a4f1b7d.rgu"=hex:22,BE,32,95,84,37,FE,4B,7E,20,78,C6,BD,46,03,AA

"2f863e61-941d-4fb6-bcdf-35bf606e613a.rgu"=hex:18,EE,3C,8B,E6,DE,DC,A6,4C,B6,28,7F,67,12,48,30

"582f7a58-3c50-4301-970a-ed5ec8947692.rgu"=hex:97,F0,D6,37,79,46,D6,7A,D8,4D,A4,EE,3C,7F,85,F9

"77f38251-db87-4e5d-96d9-9e8e35b6dc1d.rgu"=hex:C7,C6,FD,ED,3F,D5,35,5D,9E,3C,C5,D5,C9,BD,DF,C7

"d13b7447-0248-462a-bba4-d868f31642ed.rgu"=hex:66,C2,53,A8,89,46,3D,D9,07,F3,DC,DF,E6,CD,C6,0C

"23ba5346-78b8-4436-b7d2-f30712c3cef4.rgu"=hex:77,8E,05,9F,74,C7,07,48,E8,22,04,06,1F,39,5E,6A

"e658c544-26bf-45ac-a458-2044a5d1e698.rgu"=hex:8D,B0,40,3F,48,7E,28,70,B9,53,36,CC,C6,07,5F,13

"ae879543-c73e-4888-812b-d8177c404612.rgu"=hex:C7,44,76,ED,67,67,96,2C,21,EE,3B,35,15,9F,51,A6

"29356830-10de-437d-ad6a-6c7d60a7dea4.rgu"=hex:D7,1E,6A,E9,7A,4A,D6,3A,DB,AF,3D,E6,5F,3F,F6,E1

"6b4ed31c-5ced-41b2-b917-2c006f046a5e.rgu"=hex:23,E0,F9,E1,C7,8E,20,1E,AF,63,D7,4F,2C,82,09,88

"adc19413-37b2-4018-af8a-148b50f6ea13.rgu"=hex:E4,D7,4D,24,2E,AC,93,A1,D9,72,83,9E,53,B4,22,7D

"8cb4ac12-6bc5-4bda-ab45-539988c36a95.rgu"=hex:B7,99,22,06,C2,DE,76,EA,9C,49,76,08,F2,DB,4F,D8

"1dc3da02-499f-4547-9fd2-78cddfda9c62.rgu"=hex:9E,33,DC,86,F6,17,59,C8,0B,64,E3,67,15,FE,CA,14

"boot.rgu"=hex:64,E4,44,7B,E7,00,F8,F3,E6,19,7B,6D,71,B0,88,B3

This is a difference I have been able to spot in default.hv Any relevance?

user.hv is the same

boot.rgu platformrebuilder adds a couple of entries of lsofilter.dll while BOS version has an entry related to encfilt.dll

platformrebuilder adds

[HKEY_LOCAL_MACHINE\System\StorageManager\Filters\ENCFilt]
"PolicyDLL"="DeviceEncryptionPolicy.dll"

"EncryptByDefault"=dword:0

[HKEY_LOCAL_MACHINE\System\StorageManager\Filters\LsFilter]
"Dll"="LSFILTER.dll"

"Order"=dword:1

and

[HKEY_LOCAL_MACHINE\System\StorageManager\FATFS\Filters\ENCFilt]
"Dll"="encfilt.dll"

"Order"=dword:5

and

[HKEY_LOCAL_MACHINE\Drivers\BuiltIn\LSOMACORE]
"Dll"="lsomacore.dll"

"Prefix"="DRM"

"Index"=dword:1