If you have use EaseUs Partition Master to resize your Windows 8 partitions, you might have problem to create Windows recover drive, fail to backup or recover to factory with pre-installed recovery tool.
I just bought a Lenovo C440. It comes with Windows 8 and OneKey Recovery. My experience is based on the combination.
Because the default partition size is too small for my C drive, I use EaseUs Partition Master to re-size. Then I cannot launch to OneKey Recovery for backup or recovery. I also fail to create a USB recovery drive using [Recovery] in [Control Panel].
It took me several days to figure out what’s going wrong. In short, it’s all related to the partition type which EaseUs Partition Master cannot handle properly. I will show you how to solve these problems.
The Factory Partition List
Launch cmd.exe and run as administrator. In command prompt, type diskpart and run this program.
In interactive mode, use LIST DISK to view all disk numbers in your computer. Then select you disk by SELECT DISK=0 if this is your only drive.
Use LIST PARTITION to view partition information. Below is what it should be by factory default:
Partition ### Type Size Offset ------------- ---------------- ------- ------- Partition 1 Recovery 1000 MB 1024 KB Partition 2 System 260 MB 1001 MB Partition 3 OEM 500 MB 1261 MB Partition 4 Reserved 128 MB 1761 MB Partition 5 Primary 390 GB 1889 MB Partition 6 Recovery 390 MB 392 GB Partition 7 Primary 48 GB 392 GB Partition 8 Recovery 24 GB 441 GB
More detail command document may be found in DiskPart Command-Line Options.
EaseUS Partition Master change Partition Type without Messages
After resizing by EaseUs Partition Master, you will lost all diag flag in partition which may be identified as diag in GParted. You need to manually change these value.
Here is a partition list of my disk after resize partition. Those marked by red color should be repaired.
Partition ### Type Size Offset ------------- ---------------- ------- ------- Partition 1 OEM 1000 MB 1024 KB Partition 2 System 260 MB 1001 MB Partition 3 Primary 500 MB 1261 MB Partition 4 Reserved 128 MB 1761 MB Partition 5 Primary 390 GB 1889 MB Partition 6 Primary 390 MB 392 GB Partition 7 Primary 48 GB 392 GB Partition 8 OEM 24 GB 441 GB
To help you compare my partition to yours, I also LIST VOLUME for your reference:
Recover Partition ID
I use DETAIL PARTITION (select a partition before use this command) and compare partition ID. Here is a reference list of partition type and ID. You need to manually SELECT PARTITION then SET ID for the damaged partition type.
- Recovery is DE94BBA4-06D1-4D40-A16A-BFD50179D6AC
- System is C12A7328-F81F-11D2-BA4B-00A0C93EC93B
- OEM is BFBFAFE7-A34F-448A-9A5B-6213EB736C22
- Reserved is E3C9E316-0B5C-4DB8-817D-F92DF00215AE
- Recovery is DE94BBA4-06D1-4D40-A16A-BFD50179D6AC
- Primary is EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
You cannot update the partition with type Reserved.
In my case, I need to change partition 1, 3, 6, and 8 respectively to type Recovery, OEM, Recovery, and Recovery. You may save below DiskPart commands as a text file and use /s to execute as whole.
For example, I save following commands as c440.txt and use diskpart /s c440.txt to batch execute.
SELECT DISK=0 SELECT PARTITION=1 SET ID=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC SELECT PARTITION=3 SET ID=BFBFAFE7-A34F-448A-9A5B-6213EB736C22 SELECT PARTITION=6 SET ID=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC SELECT PARTITION=8 SET ID=DE94BBA4-06D1-4D40-A16A-BFD50179D6AC EXIT
Enable Windows Recovery Environment
Now, last step is to enable your Windows Recovery Environment, or WinRE for short, partition again by:
reagentc /disable reagentc /enable
You may tell if your WinRE partition is back by reading the output message. In Windows RE status and Windows RE location, it will show you whether or not it found the partition and enable.
If you don’t have a WinRE Partition, you may check the Move Windows RE to Separate Partition section to create your own. I have successfully create a WinRE custom image but fail to use it with [Recovery] in [Control Panel].
After reboot, you shall be able to create a recovery drive and OneKey Recovery successfully.
If you still have problems to restore to factory default, please reference Reset your Lenovo Computer with Windows 8 for more help
Source https://amigotechnotes.wordpress.com/2013/12/07/recover-lenovo-one-key-rescue-after-resizing-partitions