C: partition problem but have an e: partition

Rolando_3 · Apr 3, 2017

Hello, so i installed win 10 in my win 7 computer using dual boot and hard drive partitions from windows, but I ran out of storage in my win 10 partition that is the one I use the most, I selected from win 7 to set my e: partition (win 10) as active partition, and when I turned off win 7 and tried to reboot I got the 0xc000000f error.

I can open my motherboard bios.

Is there way to boot win 10? And how can. I retrieve my data?
Thanks

Colif · Apr 3, 2017

The problem is that C isn't meant to be the active partition, the System partition is meant to be the active partition, not the partition where windows is. PC boots up using instructions in the System partition as otherwise the PC doesn't know where to find Windows 10 on the disc

change boot order so USB is first, hdd second
boot from installer
on screen after languages, choose repair this pc, not install.
choose troubleshoot
choose advanced
choose command prompt and follow this from step 4: https://neosmart.net/wiki/set-partition-as-active/#Set_partition_as_active_on_Windows_8 (command work in win 10) You need to know which partition is the System partition. Since its dual boot on same hdd as win 7 I think it should be the 1st partition on drive. it should not be very big, a few 100mb

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C: partition problem but have an e: partition

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