It’s easy to create a bootable flash drive using Windows 10 Disk Management tool. The difference is that startup drives contain a hidden partition that contains code that initializes the computer and prepares it to run the operating system.
All other drives, internal and external are not bootable, instead being used mostly for storing data. By default, only the startup drive or C drive is bootable. I wish I had this guide handy 4 hours ago.Bootable is a technical term that means the computer can be started up using a USB drive.
In Windows Explorer, right-click on the USB partition you just create it, and format it in FAT32.Type in ASSIGN - this will give your partition a letter.Type in CREATE PARTITION PRIMARY SIZE=6000.Type in CLEAN - this will literally obliterate the partition table, so use caution and backup the drive if you needed any info on it (I hope not - you’re using it as an installer surface).Type in SELECT DISK X, where X is the number identifying the flash drive.Note the USB flash (look at the size to see which one it is). Run the Command Prompt as Administrator.That’s right, you paid for a 64GB USB flash, and now you’re going to make it appear as if it is 6GB, with the help of our old friend DISKPART. How do you solve that without buying a new small flash drive, and formatting is as NTFS? By temporarily making your large flash drive be smaller. WUDT would format the drive into NTFS, and still put the right content on it, but the machine would never treat the USB as something to read an OS installer from. So what’s the deal here?Īs it turns out, the expectation is that the flash drive will be formatted in FAT32, with the ISO contents on it. My Surface Pro 3 would just refuse to even look at the USB for boot information. Following the typical dance, I installed the Windows 7 USB/DVD Download Tool, downloaded a Windows 10 ISO from my Visual Studio subscription download site, used WUDT to put the ISO on the flash drive and… nothing.
Got an interesting problem today - had to re-image a Surface Pro 3, but only had a 64GB flash drive handy.
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