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Asus Zenbook A16 Snapdragon X2 Windows ARM 26H1 SSD Upgrade
#1
Thought I'd document my experiences and journey with Hasleo products to upgrade the SSD on my Asus Zenbook A16 Snapdragon X2 device running Windows 11 ARM Pro 26H1.

When trying to create an Emergency Disk using Hasleo Backup Suite for Windows ARM (v5.8.2.0) using the "Enable support for 'WINDOWS UEFI CA 2023'" option I kept getting an error at the 5% mark that said "Failed to run system API. (0x02F4001500000003)".

Using the "Download WinPE components" option successfully created the ISO but I couldn't get the system to boot off it, it boot looped after trying to load. Tried turning off Secure Boot and a bunch of other things, nothing worked. Think the WinPE build needs updates to work with Windows ARM 26H1.

-----------------------------

Next, I bought Hasleo Windows To Go (because I have Windows 11 Pro, I think with Home it's free): https://www.easyuefi.com/wintousb/ And I was able to clone and boot a clone of the entire Windows 11 ARM 26H1 OS on my Asus Zenbook A16 off an external USB drive.

To get it to boot off the external USB  SSD I had to:

1.) Turn off Secure Boot in the BIOS
2.) Get USB driver in Windows on the USB drive to init on boot, otherwise I got a 0x7b blue screen (attached screenshots with details of fix)

This is much nicer than a WinPE environment since it's a literal clone of the entire OS. I'm booting off the 2TB version of this external SSD I bought a year or so ago: https://www.amazon.com/dp/B0D47DZB1G connected to the USB3 USB-A port.

Sometimes the BIOS boot drive selector (hold down esc during boot process) wouldn't see the USB drive as an available option to boot from. I had to do a complete shut down/power off and start from a clean boot to get it to see it, or go into the bios, toggle something like fast boot, and force a complete restart.

Used the new USB drive to restore to a new SSD using the free version of Hasleo Backup Suite. First time I restored it froze/bluescreened at the 95% restore mark with a USB driver error. I ran the restore again and it succeeded on my second attempt. Just upgraded the SSD in the A16, just in time, was starting to delete things.

Also bought/used this thermal pad on the new SSD, seems to be running cool: https://www.amazon.com/dp/B09V53W559. Since the Zenbook is a thin light I thought safest to go with thinnest 0.5mm available on the single sided SSD.

Note: I also have Bitlocker disabled since first setting up this system, in case that has an effect.


Attached Files Thumbnail(s)
           
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#2
(05-10-2026, 11:58 PM)talynone Wrote: When trying to create an Emergency Disk using Hasleo Backup Suite for Windows ARM (v5.8.2.0) using the "Enable support for 'WINDOWS UEFI CA 2023'" option I kept getting an error at the 5% mark that said "Failed to run system API. (0x02F4001500000003)".

Using the "Download WinPE components" option successfully created the ISO but I couldn't get the system to boot off it, it boot looped after trying to load. Tried turning off Secure Boot and a bunch of other things, nothing worked. Think the WinPE build needs updates to work with Windows ARM 26H1.

To further analyze the issue, please open the save log file dialog and save the log file, then send the log file to us.
[Image: JQCplK55_o.png]

Regarding the Windows To Go issue, your computer appears to have "Windows UEFI CA 2023" enabled. When creating the Windows To Go drive, did you check the "Enable support for 'Windows UEFI CA 2023'" option?
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#3
(05-10-2026, 11:58 PM)talynone Wrote: When trying to create an Emergency Disk using Hasleo Backup Suite for Windows ARM (v5.8.2.0) using the "Enable support for 'WINDOWS UEFI CA 2023'" option I kept getting an error at the 5% mark that said "Failed to run system API. (0x02F4001500000003)".

Please try this version below to see if the problem still persists.
https://www.easyuefi.com/backup-software...260511.exe
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#4
(05-11-2026, 02:12 PM)admin Wrote:
(05-10-2026, 11:58 PM)talynone Wrote: When trying to create an Emergency Disk using Hasleo Backup Suite for Windows ARM (v5.8.2.0) using the "Enable support for 'WINDOWS UEFI CA 2023'" option I kept getting an error at the 5% mark that said "Failed to run system API. (0x02F4001500000003)".

Please try this version below to see if the problem still persists.
https://www.easyuefi.com/backup-software...260511.exe

Hi, thanks for looking into this. I tried the version linked, same issue. I've attached my logs.

On the question:
Regarding the Windows To Go issue, your computer appears to have "Windows UEFI CA 2023" enabled. When creating the Windows To Go drive, did you check the "Enable support for 'Windows UEFI CA 2023'" option?

Yes, I did, the only issue was the usb driver did not init on boot so I had to do the registry fixes I posted shown in the screenshot.


Attached Files
.zip   backup-suite-log-20260511005446.zip (Size: 126.35 KB / Downloads: 1)
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#5
Please download again and try, note that the download link has not changed.
https://www.easyuefi.com/backup-software...260511.exe
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#6
(05-11-2026, 09:45 PM)admin Wrote: Please download again and try, note that the download link has not changed.
https://www.easyuefi.com/backup-software...260511.exe

This time it got to 100% but failed at the end with a different error:

"Failed to copy file. (0x03DB008000000050)"

Log and screenshot attached.


Attached Files Thumbnail(s)
   

.zip   backup-suite-log-20260511051803.zip (Size: 152.34 KB / Downloads: 1)
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#7
(05-11-2026, 10:19 PM)talynone Wrote:
(05-11-2026, 09:45 PM)admin Wrote: Please download again and try, note that the download link has not changed.
https://www.easyuefi.com/backup-software...260511.exe

This time it got to 100% but failed at the end with a different error:

"Failed to copy file. (0x03DB008000000050)"

Log and screenshot attached.

It seems that Windows ARM 26H1 has not been officially released, and we cannot find its download link, so we are unable to reproduce and test it. This is a big problem for us to reproduce and resolve the issue.  Undecided
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#8
@admin

Please see if the following is helpful

Important notes about “Windows ARM 26H1”

Windows 11, version 26H1 is a targeted/scoped release only for new devices with specific new silicon (primarily certain Qualcomm Snapdragon X-series processors launching in early 2026).
It is not available as a general public ISO download from Microsoft.
The official ARM64 download page above is still serving 25H2

You can join the Microsoft Insider program and download one of the following

Windows 11 Client Arm64 Insider Preview (Experimental_ - Build 29576.1000

or

Windows 11 Client Arm64 Insider Preview (Dev) - Build 26200.5074



Windows on Snapdragon
https://www.qualcomm.com/developer/windo...snapdragon


Get free, hands-on experience with Snapdragon compute products and services with Qualcomm Device Cloud
https://qdc.qualcomm.com/

Welcome to the Qualcomm® Device Cloud
Our cloud-based platform lets you remotely access real devices powered by Snapdragon® and Qualcomm® platforms for seamlessly testing applications.
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#9
(05-12-2026, 05:29 PM)AdvancedSetup Wrote: @admin

Please see if the following is helpful

Important notes about “Windows ARM 26H1”

Windows 11, version 26H1 is a targeted/scoped release only for new devices with specific new silicon (primarily certain Qualcomm Snapdragon X-series processors launching in early 2026).
It is not available as a general public ISO download from Microsoft.
The official ARM64 download page above is still serving 25H2

You can join the Microsoft Insider program and download one of the following

Windows 11 Client Arm64 Insider Preview (Experimental_ - Build 29576.1000

or

Windows 11 Client Arm64 Insider Preview (Dev) - Build 26200.5074



Windows on Snapdragon
https://www.qualcomm.com/developer/windo...snapdragon


Get free, hands-on experience with Snapdragon compute products and services with Qualcomm Device Cloud
https://qdc.qualcomm.com/

Welcome to the Qualcomm® Device Cloud
Our cloud-based platform lets you remotely access real devices powered by Snapdragon® and Qualcomm® platforms for seamlessly testing applications.

@AdvancedSetup,

Thank you for the information. 

Best regards,
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#10
(05-11-2026, 10:19 PM)talynone Wrote:
(05-11-2026, 09:45 PM)admin Wrote: Please download again and try, note that the download link has not changed.
https://www.easyuefi.com/backup-software...260511.exe

This time it got to 100% but failed at the end with a different error:

"Failed to copy file. (0x03DB008000000050)"

Log and screenshot attached.

Please try this version below to see if the problem still persists.
https://www.easyuefi.com/backup-software...260512.exe

We packaged the required files directly into the installer, rather than extracting them from the current operating system.
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