This is an unknown hidden function in Windows system, even Microsoft official has never mentioned any relevant information. Before that, it was generally believed that exFAT could not be used as a system disk to run the system, but now it will be history.

Personal daily main machine disk partition preview screenshot:

New features brought by exFAT:

Optimize the volume bitmap management and page block allocation to improve the read-write speed of flash storage media

Description of the exFAT file system driver update package Introduction. This article discusses the key features and benefits of the extended File Allocation Table (exFAT) file system drivers for Windows XP and for Windows Server 2003. The exFAT file system is the successor to FAT32 in the FAT family of file systems. SDXC Memory Cards and 256GB CompactFlash cards are formatted natively in the exFAT file system. Flash Drives may also be formatted in exFAT. The operating system must support the exFAT file system in order for these devices to function properly. ExFAT Supported Operating Systems. Windows 10 only allows formatting exFAT on volumes sized 32 GiB or larger with the default user interface, and FAT32 format is suggested for lower sizes; command-line utilities still accept a full range of file systems and allocation unit sizes.

No volume logging, reduce the number of read and write operations of flash memory to prolong its service life

No permission management mechanism is the highest authority by default, and the management system file will no longer report insufficient permission error

Windows to go has stronger interaction ability and wider compatibility with platforms such as MAC

Allows allocation of larger clusters to improve IO performance

Support TFAT protection mechanism (win8 only)

ECC metadata only

matters needing attention:

ExFAT startup only supports Windows 8 and above systems, and windows 7 and below systems do not support exFAT startup, so there is no need to try again.

ExFAT is recommended to be used with flash disk such as solid state disk or U disk when installing and starting windows system. Traditional mechanical hard disk is not recommended unless it is specially needed.

Windows 10 Exfat Driver

In order to ensure the boot efficiency, it is recommended to use legacy boot first. The booting time of UEFI is slightly longer than that of BIOS. If you must use UEFI boot, please turn off safe boot (although it can be started without turning off, it is very slow! )。

In order to ensure the startup efficiency and version compatibility of the system, it is recommended to install the system in the traditional mode. The signed exFAT driver needs to be replaced manually for a higher version of 64 bit system, otherwise the startup time will be very long (win10 does not replace the driver for two hours, and the replacement drive starts for 20 seconds). For 32-bit systems, there is no such problem,

The startup time of the higher version system is always slightly longer than that of the lower version system. For those students who are particularly concerned about the startup speed, please use the lower version system to start (minimum 7850).

Although the startup time of exFAT may be a little longer, it does not run slowly after entering the system.

In fact, this is caused by the poor optimization of exFAT startup by Windows startup manager, but a special method can be used to speed up the startup.

Installation idea:

Since there has always been a bug in Microsoft Sysprep, the original system will be stuck in the system OOBE interface when it is started, so the original system will be directly installed into the exFAT partition, and an error will be reported in the system OOBE interface, and the initialization cannot be completed.

The correct installation method is to install the system in the NTFS partition and manually complete the OOBE initialization phase and enter the desktop. After that, the whole system is packaged and backed up as wim or ESD files under winpe (ghost cannot be used) and then decompressed and released to the exFAT partition to start.

For the installed and available system, you can directly back up WIM / ESD in winpe, format the original NTFS volume as exFAT, and then release the system files to test startup. If there is a problem, you can manually restore it to the state before the test.

Preparation tools:

Exfat Format Windows

MSDN original system:

Download link

Micro PE Toolbox:

Windows 10 Exfat Driver Windows 10

Download link

ExFAT driver for 64 bit system:

Download link

Operation steps:

1. Download the windows system image to be installed. Use the latest Windows 10 v1903 64 bit version as an example. If you have already downloaded, you can skip this step. It is recommended to choose win10 v1903 64 bit version, which adds support for exFAT VHD (x) startup.

2. Download the Windows PE maintenance system. Take the latest micro PE toolbox v2.0 64 bit version as an example. If you have already downloaded it, you can skip this step. It is recommended to select the 64 bit version of wepe V2.0, which adds support for nvme disks.

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