GPT to EMBR conversion OS not boot
Posted: Mon Apr 20, 2015 5:52 pm
Win8.1 will not boot after following Win8 OEM conversion instructions, documenting each step as processed. PC is Lenovo K450e with 2T HD.
Reconfirmed Win8 Active, BCD and bootmgr files exists.
Rewrite bootmgr prohibited.
“Startup repair couldn’t repair your PC”.
Winre.wim exists.
Could not activate or deactivate winre: ‘reagentc; is not recognized as an internal or external command, operable program or batch file.
Before restoring full HD image to try conversion again, any ideas why OS will not boot?
What to do?
Steps documented as processed:
1– disable
adm command prompt – reagentc /disable
WinRE. REAGENTC.EXE: Operation Successful.
2– verify winre.wim exists in C:\Windows\system32\Recovery folder
adm command prompt – dir /a C:\Windows\System32\Recovery
358,212,654 Winre.wim
3– Boot to BIBM
note partition names
WINRE_DRV Partition 1000 MiB HPFS/NTFS
SYSTEM_DRV Partition 260 MiB EFI System
LRS_ESP Partition 500 MiB FAT-32
Microsoft reserved partition Partition 128 MiB GPT Entry
Windows8_OS Partition 1880840 MiB HPFS/NTFS
PBR-DRV Partition 25000 MiB HPFS/NTFS
4–
select EFI System partition
delete; clear boot sector
select Microdoft reserved partition
delete
DO NOT DELETE WINRE_DRV partitin
5– will install BIBM, so Change Disk Type to EMBR
changed to EMBR
confirmed by clicking Change Disk Type again to see GPT & MBR choices
all remaining partition names unchanged
6– set OS active
EMBR: use insert button to fill partition table with the desired partitions.
At the very least, the table must contain the Windows partition.
Set in partition table: Windows8-OS (active); WINRE_DRV; PBR_DRV
click view MBR
select OS partition
click Set Active; click Apply
close Work with Partitions window
7– reboot into Windows Repair Media
using TBWinRE/PE, open TBLauncer > click F4 to see partition list C:\ is OS.
language > Troubleshoot > Advanced Options > Command Prompt
if using TBWinRE/PE TBLauncer will start Command Prompt
8– determine if BCD (boot configuration data file) exists
command prompt: dir /a C:\Boot\BCD
1 File 20,480
item #19: recommended to delete and create new BCD
9– delete
command prompt: rd /s /q C:\Boot
response is new cursor
10– rebuild BCD
command prompt: bcdboot C:\Windows /S /C:
Boot files successfully created.
11– verify Win8 has bootmgr
command prompt: dir /a C:\
listed – 398,356 bootmgr
12– close command prompt; remove media
reboot; Windows should boot normally
13– DID NOT BOOT; error 1962; no OS found
a– view MBR; reconfirm Windows8_OS is active
b– reconfirm BCD file exists
c– reconfirm bootmgr exists
14– set BIOS to legacy only from legacy first
boot to TBWinRE/PE
click English > US > Troubleshoot > Advanced options > Startup Repair > Win8
Startup repair couldn’t repair your PC
press advanced options (returns to previous options) or shut down
Log file: C:\windows\System32\Logfiles\Srt\SrtTrail.txt
15– Enable WinRE failed
disable WinRE failed
result:
‘reagentc; is not recognized as an internal or external command, operable program or batch file.
16– dir /a C:\Windows\System32\Recovery
4 files
$PBR_Diskpart.txt
$PBR_ResetConfig.xml
ReAgent.xml
Winre.wim
Reconfirmed Win8 Active, BCD and bootmgr files exists.
Rewrite bootmgr prohibited.
“Startup repair couldn’t repair your PC”.
Winre.wim exists.
Could not activate or deactivate winre: ‘reagentc; is not recognized as an internal or external command, operable program or batch file.
Before restoring full HD image to try conversion again, any ideas why OS will not boot?
What to do?
Steps documented as processed:
1– disable
adm command prompt – reagentc /disable
WinRE. REAGENTC.EXE: Operation Successful.
2– verify winre.wim exists in C:\Windows\system32\Recovery folder
adm command prompt – dir /a C:\Windows\System32\Recovery
358,212,654 Winre.wim
3– Boot to BIBM
note partition names
WINRE_DRV Partition 1000 MiB HPFS/NTFS
SYSTEM_DRV Partition 260 MiB EFI System
LRS_ESP Partition 500 MiB FAT-32
Microsoft reserved partition Partition 128 MiB GPT Entry
Windows8_OS Partition 1880840 MiB HPFS/NTFS
PBR-DRV Partition 25000 MiB HPFS/NTFS
4–
select EFI System partition
delete; clear boot sector
select Microdoft reserved partition
delete
DO NOT DELETE WINRE_DRV partitin
5– will install BIBM, so Change Disk Type to EMBR
changed to EMBR
confirmed by clicking Change Disk Type again to see GPT & MBR choices
all remaining partition names unchanged
6– set OS active
EMBR: use insert button to fill partition table with the desired partitions.
At the very least, the table must contain the Windows partition.
Set in partition table: Windows8-OS (active); WINRE_DRV; PBR_DRV
click view MBR
select OS partition
click Set Active; click Apply
close Work with Partitions window
7– reboot into Windows Repair Media
using TBWinRE/PE, open TBLauncer > click F4 to see partition list C:\ is OS.
language > Troubleshoot > Advanced Options > Command Prompt
if using TBWinRE/PE TBLauncer will start Command Prompt
8– determine if BCD (boot configuration data file) exists
command prompt: dir /a C:\Boot\BCD
1 File 20,480
item #19: recommended to delete and create new BCD
9– delete
command prompt: rd /s /q C:\Boot
response is new cursor
10– rebuild BCD
command prompt: bcdboot C:\Windows /S /C:
Boot files successfully created.
11– verify Win8 has bootmgr
command prompt: dir /a C:\
listed – 398,356 bootmgr
12– close command prompt; remove media
reboot; Windows should boot normally
13– DID NOT BOOT; error 1962; no OS found
a– view MBR; reconfirm Windows8_OS is active
b– reconfirm BCD file exists
c– reconfirm bootmgr exists
14– set BIOS to legacy only from legacy first
boot to TBWinRE/PE
click English > US > Troubleshoot > Advanced options > Startup Repair > Win8
Startup repair couldn’t repair your PC
press advanced options (returns to previous options) or shut down
Log file: C:\windows\System32\Logfiles\Srt\SrtTrail.txt
15– Enable WinRE failed
disable WinRE failed
result:
‘reagentc; is not recognized as an internal or external command, operable program or batch file.
16– dir /a C:\Windows\System32\Recovery
4 files
$PBR_Diskpart.txt
$PBR_ResetConfig.xml
ReAgent.xml
Winre.wim