Copy Windows installation from 1TB to 4TB SSD


Calab

Calab

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A friend of mine currently has a 1TB SSD installed in their laptop. I believe that it is set up as an MBR disk partitioning scheme. She has just purchased a 4TB SSD to replace the 1TB SSD. MBR disks have a 2TB limit. How do we transfer the system from the 1 TB SSD to the 4TB SSD and use the 4TB as a single partition? We cannot modify what is on the 1TB disks.

We did try to clone the disk from the 1TB to the 4TB with AOMEI Backupper, converting the disk to GPT on the clone, and with SSD alignment. The laptop will not boot from the clone drive.

If it matters, the BIOS on the laptop can support Legacy booting as well as UEFI booting.

I don't have the laptop handy, so I can't provide any more details, unfortunately.
 
Windows Build/Version
Windows 11 unknown version

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1) Please make free or pay backup images using Macrium.

www.majorgeeks.com

Download Macrium Reflect FREE Edition 8.0.7783 - MajorGeeks

With Macrium Reflect Free Edition you'll be able to easily make an accurate and reliable image of your HDD or individual partitions. Using this image you can restore the entire disk, partition or...
www.majorgeeks.com


Backup and Restore with Macrium Reflect:

www.tenforums.com

Backup and Restore with Macrium Reflect

How to Create and Restore a System Image Backup with Macrium Reflect
www.tenforums.com www.tenforums.com




2) Clean install Windows 11 on the new 4TB drive with BIOS UEFI (without CSM)

www.elevenforum.com

Clean Install Windows 11

This tutorial will show you step by step on how to clean install Windows 11 at boot on your PC with or without an Internet connection and setup with a local account or Microsoft account. Windows 11 is a client operating system and includes features that users and organizations should know...
www.elevenforum.com www.elevenforum.com

www.elevenforum.com

Download Official Windows 11 ISO file from Microsoft

This tutorial will show you how to download an official Windows Server or Windows 11 64-bit or ARM64 ISO file from Microsoft. Microsoft provides ISO files for Windows Server and Windows 11 to download. You can use these ISO files to clean install or in-place upgrade Windows 11. The Flight Hub...
www.elevenforum.com www.elevenforum.com





3) Use Macrium to restore only the C: partition from the 1TB MBR drive to the new 4TB GPT drive.
 

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HP
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There's a raft of possible causes, but you'll need the laptop on hand to go through them.

Quick reference:
www.wittytool.com

Cloned SSD Won't Boot? Here's How I Fixed It (Step-by-Step Guide)

Cloned SSD won't boot? I tested 9 fixes - BIOS settings, BCD repair, partition style & more. Here's exactly what worked to get Windows running again.
www.wittytool.com www.wittytool.com
 

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Windows 11 Pro 24H2i7 Ultra16GBIntel
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Windows 11 Pro 24H2
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LG
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i7 Ultra
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16GB
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Intel
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Intel Realtek
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Laptop 17" & TB4 Dell 27" QHD Ultrasharp w/integral TB4 hub
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1TB SSD, 5 external WDs
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Calab said:
a 1TB SSD installed in their laptop
Click to expand...
First of all you need to check the specs in the laptop manual. Not all motherboards (or bios)will accept a 4tb drive. You give us nothing regarding the laptop in question. If the current drive was formatted from the factory as MBR, it would seem it's old enough that the new drivet probably won't work in that device..
If it won't then all the rest of your questions are moot.
Calab said:
use the 4TB as a single partition?
Click to expand...

Secondly, Even if the motherboard recognizes the new drive as 4tb, I don't think you are going to like the limitations of using a 4tb MBR drive. You can't use the 4tb drive as MBR with one partition. Period.

I had AI lay the limitations of a MBR drive with references:

A Master boot record (MBR) drive has several major technical limitations due to its 1980s architecture: [1, 2]
  • 2 TB Capacity Limit: MBR uses 32-bit fields to store sector addresses. With standard 512-byte sectors, it can only address up to 2³² sectors, capping the maximum usable disk or partition size at approximately 2.2 TB (2 TB practical). Any storage space beyond 2 TB on a larger drive cannot be addressed or used. [1, 2, 3]
  • 4 Primary Partitions Limit: MBR allows a maximum of four primary partitions per disk. To bypass this restriction, you have to create an extended partition containing multiple logical drives, which adds complexity to disk management. [1, 2]
  • Single Point of Failure: MBR stores all partition and boot information in a single sector at the very beginning of the drive. If this sector or partition table gets corrupted or overwritten, data recovery can be very difficult or result in total boot failure. [1, 2, 3, 4]
  • No Built-in Data Redundancy or Checksums: Unlike GPT (GUID Partition Table), MBR does not keep backup copies of its partition table and lacks CRC checksums to verify data integrity or automatically repair corrupted structures. [1, 2, 3, 4]
  • Legacy BIOS Dependency: MBR is designed around traditional 16-bit BIOS systems. While it can work on modern UEFI systems if Compatibility Support Module (CSM) or legacy boot mode is enabled, it cannot take full advantage of modern UEFI features like Secure Boot for large boot drives. [1, 2, 3, 4]

Calab said:
We cannot modify what is on the 1TB disks.
Click to expand...
Never say never. Even if the laptop will recognize the drive as 4tb (and personally I do not think it will), you would have to first convert the existing installation on the 1 tb drive to GPT, then either clone it to the 4tb or make an image of the 1tb which could be restored to the new drive. You would then have to deal with extending the system partition into the extra unallocated space.
Doing all this comes with extreme risks.
 

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    Windows 11 Pro 26H2 26300.9457
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    Logitech wireless
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    still too embarrassed to tell
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    Firefox
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  • System 3 is non compliant Dell 9020 i7-4770/24gb ram Win11 PRO 26200.9457
I suggest doing the conversions to GPT and UEFI first. When finished clone the 1TB SSD to the 4TB one.

Earlier this year on an SSD with Windows 10 I converted the SSD from MBR to GPT and changed the boot from CSM to UEFI. I did not have to reinstall. No data was lost. Naturally I backed up the SSD before I did this.

I don't remember all the steps but I used AI to help reconstruct them. Maybe someone can verify this...
To convert a Windows 11 boot SSD from CSM/Legacy BIOS (MBR partition style) to UEFI (GPT partition style) without losing data, use Microsoft's built-in MBR2GPT tool.

Step 1: Back Up Your Data

Step 2: Check Current BIOS Mode

1. Press Win + R, type msinfo32, and hit Enter.
2. Look for BIOS Mode. If it says Legacy or CSM, your drive is currently using MBR.

Step 3: Validate the Disk with MBR2GPT

1. Open the command prompt
2. Run the validation command:
C:\> mbr2gpt.exe /validate /allowFullOS
3. If validation succeeds, you will see a message saying: Validation completed successfully.

Step 4: Convert MBR to GPT

1 Run the conversion command in the same administrator window:
C:\> mbr2gpt.exe /convert /allowFullOS
2. The tool will create the EFI system partition and convert the disk layout to GPT in a few moments

Step 5: Change BIOS Settings to UEFI

1. Restart your computer and immediately press your BIOS/UEFI key (such as Del, F2, F10, or F12) during startup.
2. Navigate to the boot or firmware settings.
3. Change the boot mode from Legacy / CSM to UEFI.
4. Disable CSM (Compatibility Support Module).
5. (Optional) Enable Secure Boot if desired.
6. Save your changes and exit (usually by pressing F10).

Step 6: Verify the Conversion

Once Windows 11 boots up, press Win + R, type msinfo32, and confirm that BIOS Mode now displays UEFI
Click to expand...
 

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    OS
    Windows 11 Pro 26H2 (26300.9547)
    Computer type
    Laptop
    Manufacturer/Model
    ASUS TUF Gaming A15 (2022)
    CPU
    AMD Ryzen 7 6800H with Radeon 680M GPU (486MB RAM)
    Memory
    Crucial DDR5-4800 (2400MHz) 32GB (2 x 16GB)
    Graphics Card(s)
    NVIDIA RTX 3060 Laptop (6GB RAM)
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    Screen Resolution
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    2 x Samsung 990 Evo Plus (2TB M.2 NVME SSD)
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    Malwarebytes

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    Windows 11 Pro 26H2 (26300.9547)AMD Ryzen 7 5700X3DG.SKILL Flare X 32GB (2x16GB) DDR4ASUS ROG-STRIX-RTX3060TI-08G-V2-GAMING (RTX 3...
    Operating System
    Windows 11 Pro 26H2 (26300.9547)
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    PC/Desktop
    Manufacturer/Model
    Custom build
    CPU
    AMD Ryzen 7 5700X3D
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    ASUS ROG Strix B550-F Gaming WiFi II
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