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I have Asus motherboard which has UEFI BIOS and have 2 hard disk. I installed Windows 10 OS earlier on first Hard disk and it is working as expected. I checked that even though I had UEFI , I had earlier used Legacy BIOS on UEFI with SecureBoot enabled. This was done a year ago. This first hard disk is MBR partitioned.

Now I am trying to install RHEL 7 OS on my second Hard disk. This second hard disk is also MBR partitioned and I formatted this Hard disk as 2 partition, one with NTFS file system and other as EXT4 File system and I installed RHEL 7 on this EXT 4 filesystem. (By manually partitioning during RHEL 7 installation process)

Now after the installation, I was not able to see any GRUB Boot loader option and simply, my computer enters into Windows 10 OS always.

So I used my RHEL 7 OS installation disk and boot into this DVD disk and logged on to rescue mode and I check this folder "/sys/firmware/efi" . As this folder exists, I am guessing, My RHEL OS is installed as UEFI partition(GPT) but nonetheless, I removed this RHEL 7 OS installation disk and I booted my computer and It went into Windows 10 OS. Now, I went into diskmgmt.msc and saw that the second hard disk is also partitioned as MBR only.

I reformatted my second hard disk again and need help on the below

1. I have Asus ROG Strix B 450 Motherboard with UEFI BIOS that support Legacy BIOS called as CSM -Compatibility Support Module (CSM), which is enabled by default. It makes the motherboard actually look like a BIOS system, allowing it to boot from NTFS and MBR disk.




2. I have installed Windows 10 OS and my boot options on my UEFI says to boot from both "UEFI and Legacy OPROM". If I change this to only "UEFI Driver", even my windows 10 OS is not getting loaded which I guess, my Windows 10 OS had been installed as Legacy BIOS with MBR.

Question A: Should I change my Windows 10 OS installation from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question B: Should I change my second hard disk (this is now in un-allocated state as deleted this partition) from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question C: My first hard disk which contains Windows OS 10, has 4 partitions (C,D,E,F) and I have installed Windows 10 OS on C: drive. If I install RHEL 7 on my second hard disk. should I install linux GRUB/Boot loader on this C: drive on my first hard disk?

Question D: If I just install RHEL 7 OS on my second Hard disk, is there a way to directly configure the windows Boot loader (bcdedit.exe) to add this RHEL 7 OS installation path?

Question E: Can I install RHEL 7 OS on my second Hard disk together with GRUB Boot loader on this same hard disk and then configure Windows C: drive information here?

Note: Both my 2 HDD are Sata HDD.

rhel windows uefi bios

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asked 52 mins ago

Vijayanand AVijayanand A

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0

I have Asus motherboard which has UEFI BIOS and have 2 hard disk. I installed Windows 10 OS earlier on first Hard disk and it is working as expected. I checked that even though I had UEFI , I had earlier used Legacy BIOS on UEFI with SecureBoot enabled. This was done a year ago. This first hard disk is MBR partitioned.

Now I am trying to install RHEL 7 OS on my second Hard disk. This second hard disk is also MBR partitioned and I formatted this Hard disk as 2 partition, one with NTFS file system and other as EXT4 File system and I installed RHEL 7 on this EXT 4 filesystem. (By manually partitioning during RHEL 7 installation process)

Now after the installation, I was not able to see any GRUB Boot loader option and simply, my computer enters into Windows 10 OS always.

So I used my RHEL 7 OS installation disk and boot into this DVD disk and logged on to rescue mode and I check this folder "/sys/firmware/efi" . As this folder exists, I am guessing, My RHEL OS is installed as UEFI partition(GPT) but nonetheless, I removed this RHEL 7 OS installation disk and I booted my computer and It went into Windows 10 OS. Now, I went into diskmgmt.msc and saw that the second hard disk is also partitioned as MBR only.

I reformatted my second hard disk again and need help on the below

1. I have Asus ROG Strix B 450 Motherboard with UEFI BIOS that support Legacy BIOS called as CSM -Compatibility Support Module (CSM), which is enabled by default. It makes the motherboard actually look like a BIOS system, allowing it to boot from NTFS and MBR disk.




2. I have installed Windows 10 OS and my boot options on my UEFI says to boot from both "UEFI and Legacy OPROM". If I change this to only "UEFI Driver", even my windows 10 OS is not getting loaded which I guess, my Windows 10 OS had been installed as Legacy BIOS with MBR.

Question A: Should I change my Windows 10 OS installation from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question B: Should I change my second hard disk (this is now in un-allocated state as deleted this partition) from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question C: My first hard disk which contains Windows OS 10, has 4 partitions (C,D,E,F) and I have installed Windows 10 OS on C: drive. If I install RHEL 7 on my second hard disk. should I install linux GRUB/Boot loader on this C: drive on my first hard disk?

Question D: If I just install RHEL 7 OS on my second Hard disk, is there a way to directly configure the windows Boot loader (bcdedit.exe) to add this RHEL 7 OS installation path?

Question E: Can I install RHEL 7 OS on my second Hard disk together with GRUB Boot loader on this same hard disk and then configure Windows C: drive information here?

Note: Both my 2 HDD are Sata HDD.

rhel windows uefi bios

share|improve this question

asked 52 mins ago

Vijayanand AVijayanand A

1

New contributor

Vijayanand A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

I have Asus motherboard which has UEFI BIOS and have 2 hard disk. I installed Windows 10 OS earlier on first Hard disk and it is working as expected. I checked that even though I had UEFI , I had earlier used Legacy BIOS on UEFI with SecureBoot enabled. This was done a year ago. This first hard disk is MBR partitioned.

Now I am trying to install RHEL 7 OS on my second Hard disk. This second hard disk is also MBR partitioned and I formatted this Hard disk as 2 partition, one with NTFS file system and other as EXT4 File system and I installed RHEL 7 on this EXT 4 filesystem. (By manually partitioning during RHEL 7 installation process)

Now after the installation, I was not able to see any GRUB Boot loader option and simply, my computer enters into Windows 10 OS always.

So I used my RHEL 7 OS installation disk and boot into this DVD disk and logged on to rescue mode and I check this folder "/sys/firmware/efi" . As this folder exists, I am guessing, My RHEL OS is installed as UEFI partition(GPT) but nonetheless, I removed this RHEL 7 OS installation disk and I booted my computer and It went into Windows 10 OS. Now, I went into diskmgmt.msc and saw that the second hard disk is also partitioned as MBR only.

I reformatted my second hard disk again and need help on the below

1. I have Asus ROG Strix B 450 Motherboard with UEFI BIOS that support Legacy BIOS called as CSM -Compatibility Support Module (CSM), which is enabled by default. It makes the motherboard actually look like a BIOS system, allowing it to boot from NTFS and MBR disk.




2. I have installed Windows 10 OS and my boot options on my UEFI says to boot from both "UEFI and Legacy OPROM". If I change this to only "UEFI Driver", even my windows 10 OS is not getting loaded which I guess, my Windows 10 OS had been installed as Legacy BIOS with MBR.

Question A: Should I change my Windows 10 OS installation from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question B: Should I change my second hard disk (this is now in un-allocated state as deleted this partition) from MBR to GPT (for enabling Dual BOOT OS with RHEL)

Question C: My first hard disk which contains Windows OS 10, has 4 partitions (C,D,E,F) and I have installed Windows 10 OS on C: drive. If I install RHEL 7 on my second hard disk. should I install linux GRUB/Boot loader on this C: drive on my first hard disk?

Question D: If I just install RHEL 7 OS on my second Hard disk, is there a way to directly configure the windows Boot loader (bcdedit.exe) to add this RHEL 7 OS installation path?

Question E: Can I install RHEL 7 OS on my second Hard disk together with GRUB Boot loader on this same hard disk and then configure Windows C: drive information here?

Note: Both my 2 HDD are Sata HDD.

rhel windows uefi bios

share|improve this question

asked 52 mins ago

Vijayanand AVijayanand A

1

New contributor

Vijayanand A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 52 mins ago

Vijayanand AVijayanand A

1

New contributor

Vijayanand A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 52 mins ago

Vijayanand AVijayanand A

1

New contributor

Vijayanand A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 52 mins ago

Vijayanand AVijayanand A

1

New contributor

Vijayanand A is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 52 mins ago

Vijayanand AVijayanand A

1