The BIOS tries to transfer the control of the startup from the USB flash drive to the FAT32 startup code, even though the FAT32 startup code does not support this scenario.
For more information about how to use Diskpart, click the following article number to view the article in the Microsoft Knowledge Base:
How to differentiate between the MBR and the boot sectorCurrently, the Windows operating system uses signatures at offset 3 in the boot sector to determine whether the sector is a boot sector. These signatures do not appear in the MBR. The signatures are as follows:
- FAT16: MSDOS5.0
- FAT32: MSDOS5.0
- NTFS: NTFS
How to determine whether the boot sector is FAT32, FAT16, or NTFSTo determine whether the USB flash drive was formatted by using the FAT32, FAT16, or NTFS file system, you must check two strings in the boot sector. If the strings contain FAT32,FAT16 or NTFS, the boot sector was formatted in that particular file system format.
Article ID: 954457 - Last Review: Oct 22, 2008 - Revision: 1