The customer has a Dell Precision with Win 10 Pro installed. After deleting the partition and formatting the HDD, the installation runs without a problem, but the boot device is not found. Bios is set to UEFI, and if I change it to Legacy Boot, it boots and loads fine. When it fails, Dell Pro Support says we need to format the drive in GPT. If we let it continue to boot in Legacy, do we run into problems ... looks good now?
Cici· Answered on Jul 31, 2023
There are two configurations for Windows 10: Legacy BIOS and UEFI boot option. But which boot mode to use depends mainly on your Windows partitioning method.
Extended Reading: UEFI vs. BIOS: What's the Difference and Which is Better
Usually, booting in Legacy mode will not cause any problems. However, Legacy boot mode does not support partitions larger than 2TB in size, and it may cause data loss or other problems if you try to use it normally. If you have set the Legacy boot option in BIOS, the drive partition table may be the master boot record (MBR).
You do not need to format your HDD on another computer. Or convert the MBR to GPT unless you require a boot partition that is more than 2 TB in size. In GPT mode, you need to use the UEFI boot mode. Also, you need to be aware that manually formatting the drive before installation may cause problems if you do not configure the correct partition classification.
If you want to convert MBR to GPT and boot from BIOS, you can try EaseUS Partition Master. This professional tool is designed for disk converters.
Click the following link for detailed steps and guides to convert the disk.
Further Reading: How to Convert MBR to GPT or GPT to MBR Without Losing Data in Windows 11/10/8/7
How Can I Join 2 RAW Partitions Bigger Than 2TB into One Partition, Help
Windows users always meet problems like '3TB only shows 2TB on a disk'. This short page focuses on this issue and helps join 2 RAW partitions bigger than 2TB into one partition.
Sherly
Jul 31, 2023
Changed the Disk to GPT Partition Style to Install Linux but Windows Can't Boot After That
Change the disk to GPT partition style to install Linux but can't install Windows after that? Don't worry. This post has what you want, which contains a full guide on how to fix this problem.
Roxanne
Jul 31, 2023
How Can I Change an MBR Disk Installing Windows 7 to GPT
Are you finding some ways to help you fix the problem of how can I change an MBR disk installing Windows 7 to GPT? Do not worry, this passage will show you some useful ways to help you fix this issue. Now you can read this passage.
Roxanne
Jul 31, 2023
Should I Change My Boot SSD and Storage to GPT?
Are you struggling to decide whether I should change my boot SSD and Storage to GPT? Then you may need this article to guide you on the
Roxanne
Jul 31, 2023
Any Safe Way to Convert Windows to GPT Without Wiping All Data?
This article will give you a full guide on converting Windows to GPT without wiping all data with a step-by-step tutorial, which enables the Windows disk to be recognized by the UEFI mode.
Roxanne
Jul 31, 2023
Windows Can Only be Installed to GPT Disks, What Should I Do
You may encounter the "Windows can only be installed to GPT disks" problem when installing Windows systems. This article will provide insight on how to fix this error and tips on how to prevent it in the future.
Cici
Jul 31, 2023