Toshiba Satellite L15W-B1302 won't boot to USB

electrovir

Reputable
Jan 8, 2015
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My friend's new Toshiba Satellite L15W-B1302 won't boot to USB.
My laptop boots to the USB flash drive, so I'm pretty sure that the USB drive is fine.
I changed the Boot order in the BIOS by pressing F2 at start up, and it seems to have no effect. I also tried to boot from the USB drive by pressing F12, still doesn't work.

From posts I've found online, I see that the old Satellite had to be switched from UEFI to CSM boot-mode to boot from USB. However, with this Satellite it's not even grayed out, the option is nowhere there!

My laptop has Windows 7, this friend's laptop has Windows 8. Perhaps the drive only works for Windows 7?
 
Solution
You can boot using Ubuntu 14.10 with USB stick made on Universal USB installer. I coul'nt make that work with Windows 7 it won't boot. I did disable safe boot but i still having the same problem. I am going to try Chrome Os since this laptop is touchscreen and has a celeron processor.
You can boot using Ubuntu 14.10 with USB stick made on Universal USB installer. I coul'nt make that work with Windows 7 it won't boot. I did disable safe boot but i still having the same problem. I am going to try Chrome Os since this laptop is touchscreen and has a celeron processor.
 
Solution
I struggled with this for quite some time myself.
I'm using an L15W-B1302 with the latest BIOS rev available(v1.20) that does NOT have the ability to toggle to CSM mode. Here is what worked for me:
1) use Rufus(https://rufus.akeo.ie/) to build the bootable USB, not Microsoft's "Windows USB/DVD Download Tool".
2) Connect the destination flash drive that is to be written to prior to launching the Rufus app.
3) before setting partition scheme, file system, or cluster size, browse to and select the ISO image file to be used using the "Click to select an image..." button which is to the right of the "Create a bootable disk using" checkbox.
4) Now, set the "Partition scheme and target system type" to "GPT partition scheme for UEFI computer".

Notes: I used FAT32 as the File system option and 4096 bytes as the cluster size and my CSM-optionless Satellite was able to boot off of and successfully install Windows 10 Pro Insider Preview -10074 x64. I haven't tried using NTFS or 8192 byte cluster size, but they may possibly work as well.

The crux of the problem, I believe, stemmed from the fact that I could select "GPT partition...", but when I then pointed Rufus at the ISO, it "reset" the "Partition scheme..." setting back to "MBR..." without asking or notifying me. Make sure your partition scheme is set to "GPT..." when you click "Start" on writing the ISO to the USB flash drive and you should be fine.
 


Rufus + GBT partition schema worked for me. (After closed the secure boot) Thanks