Backup not selecting 450 Recovery Partition

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I use the bootable media to create and restore images. I have a question about Windows 10 on a UEFI/GPT disk :

When you launch the ATI2016 Bootable Media, and go to back up a disk, ATI2016 automatically selects the C:drive and checks the partition boxes on the NTFS-Primary partition and the EFI System partition - but it DOES NOT check the 450MB Recovery Partition ??

Why ?  If I am backing up a "disk" then that implies I am backing up a whole disk, not part of a disk?  Why would Acronis do that ?

Is it safe to select all 3 partitions ?   And then restore them ?

And even stranger, Acronis does not even detect the hidden 16MB MSR partition. A standard Win10 GPT/UEFI install creates 4 partitions :

Partition 1 : 450MB Recovery
Partition 2 : 99MB System
Partition 3 : 16MB Reserved (MSR)
Partition 4 : xxxGB Primary (the NTFS data partition)

BUT ATI2016 does not pick up the 16MB MSR Reserved parition.  Why ?  And what are the implications for when I restore to the original hard drive ? Does it recreate that 16MB partition, or does it leave it in place?  This seems like a strange thing to do on Acronis's part - if I am backing up a "whole disk" then that is exactly what I expect - to back up a "whole disk" and not a "most of a disk" ?

So the questions are :
1) Can I safely override the default and selct all 3 partitions to backup - including the 450MB Recovery
2) What are the implications of ATI not recognising the 16MB MSR ?
3) Will ATI2016 in coming updates be able to properly image a whole GPT disk - including the MSR partition ?

 

Fri, 12/11/2015 - 11:37
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mvp

You've asked some good questions.

1. You have not been doing a full disk backup. By default, Acronis only selects the minimum partitions needed to boot a Windows system. On your disk that would be the Windows C: drive partition and the EFI System partition needed to boot the system. To do a full disk backup, you need to place a check mark in the Disk box. That will place check marks in all the partitions shown.

2. This is where things get complicated. The MSR partition is not actually backed up by Acronis. If you do a full disk restore by placing a check mark in the Disk box to the original disk with the partition structure in place, Acronis will leave the 16 MB MSR partition in place. All other partitions will be restored as they were at the time the backup was made. If you do a full disk restore to a new disk, Acronis will initialize the disk according to how you booted the recovery media. If you booted the media in UEFI mode, the disk will be initialized as GPT. A 128 MB MSR partition will be created first on the disk. The 450 MB Recovery partition will be placed second on the disk, the EFI System partiton will be placed third on the disk and the Windows partiton will be placed fourth on the disk. Starting with TI 2016 build 6027, the bcd file for the system will be adjusted to specify the Recovery partition is second on the disk. The partition structure will be different, but everythig will work properly. In builds prior to 6027, the bcd was not adjusted to specify the new location of the Recovery partition and this broke the recovery function of the system. 

If you booted the media in Legacy mode with builds prior to 6027, Acronis would convert the disk to a MBR format and the restored system would not boot in UEFI mode. With build 6027, the conversion to MBR format does not happen and the system boots successfully.

The 16 MB MSR partition versus a 128 MB MSR partition issue is relatively new. Up until recently, Microsoft was using a standard 128 MB MSR partition on all UEFI/GPT installs. I first saw the 16 MB MSR partition used when I did a clean install of a Windows 10 version 1511 build 10.0.10586 system to a UEFI/GPT disk. I tested a restore of the system to a new disk and got the 128 MB MSR partition placed first on the disk as mentioned above.

3. Good question. I doubt it.

I have written a guide to restore a UEFI/GPT system to a new disk with the correct partition structure. You will find it here https://forum.acronis.com/forum/101550 .

I hope I have not confused you, but this is how it is.

Edited to correct the information above concerning booting the recovery media in Legacy mode.

Fri, 12/11/2015 - 17:50
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truwrikodrorowrelupicugojestutroclulachosaswunuhospikigawakijosaswenomaruclojeueclikaspedrubewidebrisubrohutrurifruuagothunugekedrumucisiuobrobrecrupeslapuswosluprothethibakaslechurathikucli
Beginner
Posts: 5
Comments: 4

Thanks Mustang, great answers.  I don't like the fact that ATI2016 is re-creating a MSR that is a different size to the default.  128MB was the default MSR for Windows 8/8.1 installs.  So I imagine that Acronis didn't do their homework when Win10 came out and just kept the same old code.

I will try it using Macrium Reflect and see if it picks up the 16MB MSR (from memory Macrium used to pick up the 128MB Win8 MSR)

I miss legacy BIOS/MBR !!  things were so much easier

Sat, 12/12/2015 - 03:15