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Liefr
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cloned C: drive locked and unbootable Windows 10

I bought the computer with Windows 8.1 Pro. I requested and then upgraded to Windows 10 Pro. I began having 'error 1962: OS not found,,,' intermittently. The drive is a 2tb Seagate drive. There are 6 partitions on the drive from Lenovo and Windows is #4.

I cloned the C: partition into a new Seagate 3tb drive. That left me with 2tb + the leftover unallocated. I combined the two pieces in disk management to make one large partition with only the C: partition from the old drive.

It is not bootable. I get error 1962: OS not found when I try to boot from it. The drive appears to be locked. I used cmd.exe as administrator and ran diskpart and volume commands and the drive is not read-only or otherwise restricted. I have tried Bootsect and Bootrec with /fixmbr; /fixboot; /rebuildBCD commands but no success. I suspect it is because the big drive is GPT instead of MBR.

I have the Win 10 upgrade on DVD and tried refresh but it says the drive is locked. I have done the boot diagnosis but it tries to fix it without telling you what it is doing and in any case it does not fix it.

I think my problems are based in trying to get away from the extra partitions that are no good anymore and also that I am using GPT instead of MBR. I think the old bootmgr is looking for partition 4 and I am unable to change it's mind.

If anyone has an idea I would like to hear it.
Storage HardwareWindows 10

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nobus

8/22/2022 - Mon
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nobus

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Liefr

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noxcho

Your problem was that cloning C: partition is not enough. It can boot only if boot files are also on C: but they are normally in MSR or EFI partition (depending on which type of HDD you use - GPT or MBR).
Using Migrate OS to SSD which automatically clones this partition additionally to C: - solved your problem.
nobus

tx for the kind words, and enjoy
Liefr

ASKER
All of nobus' comments were great and useful but not necessary for this problem. I gave him most of the points anyway for sharing his knowledge. The Paragon software handled it in one run. EE always comes through.
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nobus

tx for feedback