found solution from
I was trying to create a bootable flash drive with Ubuntu 11.04 using the Universal USB Installer 1.8.6.3 utility from pendrivelinx.com on a Windows 7 64-bit machine with a 16 GB flash drive (mapped to G:), but I kept getting an error that the drive wouldn’t be bootable.
The message in the command line window read:
Execute: C:\Users\[username]\AppData\Local\Temp\[random].tmp\syslinuxnew.exe -maf G:
Syslinux Errors 1
A message box would then appear with the following warning:
Universal USB Installer 1.8.6.3 SetupAn error(1) occurred while executing syslinux.
Your USB drive won’t be bootable…
[OK]
When I opened a command prompt and ran syslinuxnew.exe -maf G:, the result was zero FAT sectors. When I ran syslinux.exe -maf G:, I got a much more informative message, or at least one that I could better understand: this doesn’t look like a valid FAT filesystem.
And of course, the flash drive wasn’t FAT32, it was NTFS. I had forgotten to format the drive as FAT32 before running the utility, but I also managed to not check the box next to “We will format G:\Drive as FAT32.” in the utility itself.
No wonder Google wasn’t returning any results when I searched this – who’s going to have missed properly formatting the drive not once but twice?
In the event that a quick format as FAT32 doesn’t work for you, you can try running a few
diskpartcommands in Windows to really thoroughly format a flash drive, including the MBR and partition table.
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