Bootable device. BOOT Failure

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Bootable device. BOOT Failure

Mario Zammit 0

I have another FUJITSU Laptop last update its was on 10/6/2026 and when I start 11/6/26 Its Windows 10 on my screen tolt me Bootable Device was not found. Can you help me please? Thanks

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2 answers

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Answer 1

Are you able to access the recovery Environment using these steps.

Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down

Do this twice

On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt... etc.

Please try each option one at a time, then see if Windows will boot up correctly.

1

If there is an option available to remove the latest June update, that may be the best option.

2

Go to Troubleshoot - Advanced Option - Startup Repair

See if Windows startup can repair itself

2

Go to Troubleshoot - Advanced Option - System Restore

Check to see if you have a restore point you can go back to

4

Go to Troubleshoot - Advanced Option - Command Prompt

Run this command and press Enter.

bootrec /FixMbr

Run this command and press Enter.

bootrec /FixBoot

Run this command and press Enter.

bootrec /ScanOs

Run this command and press Enter.

bootrec /RebuildBcd

Then reboot your System to see if Windows will boot up normally.

Answer 2

Follow these steps to troubleshoot the “Bootable device was not found” / “An operating system wasn’t found” problem on the Windows 10 Fujitsu laptop.

Prepare Windows installation media

On another working PC, create a bootable USB or DVD with Windows 10 using the Media Creation Tool, as described in the article referenced in the context.

Boot the Fujitsu from USB/DVD and open Command Prompt
Insert the Windows 10 USB/DVD into the Fujitsu laptop.
Power it on and use the boot menu key (often F12, ESC, F9, F10, or F8 depending on manufacturer) to choose the USB/DVD as the boot device.
When the Windows Setup screen appears (language, time, keyboard selection), press Shift + F10 to open Command Prompt.
Check if the disk is MBR or GPT
In Command Prompt, run:
```
   diskpart
   list disk
```
In the output, look at the GPT column:
- If the system disk has an asterisk (*) under GPT, it is GPT.
- If there is no asterisk, it is MBR.
Type exit and press Enter to leave DiskPart.
Find the Windows system drive
In Command Prompt, try:
```
    dir a:\
```
- If it shows a directory listing, check if there is a \Windows folder.
If not, try the next letters:
```
    dir b:\
    dir c:\
    dir d:\
```
Skip X: (that is the RAM drive for the setup environment).
Note the drive letter where the \Windows folder is found (for example, C:). This is the OS drive.
Rebuild boot files (MBR disks) If the disk is MBR:
Use bcdboot to recreate boot files (replace C: with the drive that contains the Windows folder if different):
```
    bcdboot C:\Windows /S C:
```
Confirm that the message Boot files successfully created appears.
Mark the system volume active:
```
    diskpart
    list disk
    sel disk C
    list vol
    sel vol C
    active
    exit
```
- Replace C with the correct disk/volume identifier where the Windows folder is located, as described in the context.
Reboot from the hard drive:
```
    shutdown -f -r -t 00
```
Rebuild boot files (GPT disks) If the disk is GPT, use the same approach but with the GPT layout in mind (system partition is usually a small EFI partition). From the context, the general pattern is:
Identify the OS drive (with \Windows folder) and the SYSTEM (EFI) partition.
Run bcdboot to write both UEFI and BIOS boot files, for example:
```
    bcdboot D:\Windows /s R: /f ALL
```
- Replace D: with the OS drive and R: with the SYSTEM/EFI partition letters as discovered on your system.
Check BIOS/UEFI boot order

Restart the laptop and enter BIOS/UEFI setup (commonly ESC, DEL, or F2).
Ensure the internal hard drive/SSD is listed and set as the first boot device.
Save changes and restart.

If, after these steps, the disk does not appear in BIOS/UEFI or diskpart list disk shows no system disk, the drive or its connection may be faulty and may require hardware service.

References:

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Bootable device. BOOT Failure

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