Windows 10: Removing CentOS Dual Boot

Hello!


I have a Dell Precision 3551, which I dual booted to run CentOS 8 with Windows 10. Now that I don't need Linux, I needed to remove the dual boot. I deleted the partition and created Windows 10 installation media on a USB.


BUT...


After booting to my USB, going to the command prompt, and typing the following commands, I get:


bootrec/fixmbr -> the operation completed successfully

bootrec/fixboot -> Access is denied

bootrec/scanos -> Total identified Windows installations: 0

bootrec/rebuildbcd -> Total identified Windows installations: 0


When I unplug my USB and restart my computer, Windows 10 automatically starts, and everything seems to be working normally. Should I be concerned that the "total identified Windows installations" is 0? What does this actually mean? Do I need to do any other steps?

:)

 

Can not detect windows 10 after installing centos 7

Hi Sachin,

Thank you for valuable response.

• What is the make and model of your system?

I have no idea how to see that, & since i have only centos 7, it is not easy to find solution on it despite looking for google. Please let me know how to see that?..

still what i know is :

-Laptop model: Sony SVF15218

-Processor : Intel Core i5-3337U CPU @ 1.80 GHz x 4

-OS type : 64-bit OS(Both Centos 7 & Win 10)

-Graphics : Intel Ivybrigde Mobile & NVIDIA GT740M

-HDD : 500 GB

-RAM : 4 GB

• Since when are you using the dual boot?

-I had windows 10 as as a single for almost 2 years. For study purpose i had to install linux (near suited to Red hate), i choose Centos 7 as it is free.

-I installed Centos 7 on 2nd January 2016.

-At that time i get help from google & successfully dual-boot as windows 10 shows as windows boot manager & centos. (I can switch between them any time from grub menu.)

- Due to lack of wifi adapter in centos, while installing packages something went wrong & i had very limited access to centos, so reinstalled centos 7 around 15 days after successful dual-boot(18th Jan) (performed same steps to install as i did the first
time) & since then my in the grub menu i can only see centos.

-I tried install centos 7 2-3 time after tha to see windows in grub menu, & i testes/altered almost everything in centos but found out that my windows is somehow not detected by grub.

• Did you check in msconfig regarding the boot menus, are you getting both the Windows and Linux Boot loader menus?

- Since i am using linux i have no idea how to do in windows.

- But i played with centos's grub menu lot of time since missing windows bot manager in grub i am (99%) sure that there is something wrong with windows grub detection.

Hope i find solution soon...

Thank you...

 

Upgrading to Windows 10 on Dual boot Windows 7 with CentOS 6.5

I have Windows 7 installed alongside CentOS6.5. I have applied for free upgrade to Windows 10. Will my CentOS 6.5 partition remain as it is and I will be able to boot into CentOS 6.5? There is enough space for Windows 10 to get installed on hard drive.
But I am worried about CentOS 6.5. My machine had originally Windows 8. But I had a very tough time installing CentOS 6.5. I had to remove Windows 8, install Windows 7 and then only CntOS 6.5 could install. Will Windows 10 treat CentOS 6.5 the same way as
Windows 8?

 

Upgrading to Windows 10 on Dual boot Windows 7 with CentOS 6.5

I upgraded from win 7 to 10, and have centos 6.5. After the upgrade, everything still works as set up. I think this is the first version of window NOT to remove grub and make windows boot "at all costs". My centos is still the primary boot on grub. I have
a normal bios and MBR, not UEFI. It is a 4 year old i5 with 8GB ram.

Win 10 seems to be a bit faster than 7, although I admit, I use Centos more than windows. The upgrade took a few hours of prep to download what it needed, and a little over an hour to install.