When you boot from the DVD to perform a clean install of Windows 7, setup will create the 100MB system partition under the following
There is not an existing system partition on the machine
The system does not have 3 existing partitions
There is unallocated space on the disk for the extra partition
If you do not meet the conditions, such as if you do not have unallocated disk space for a new system partition, setup attempts
to use the existing system partition for boot files. If no partition is currently marked active, setup sets one as active using the same process applied by Windows Vista setup previously.
A result of the above conditions is that the system partition is not created during upgrade installation or clean install from
a previous system. In both of these cases there is an existing system partition, which is used for boot files. In these cases Windows 7 setup proceeds in the same way as Windows Vista setup.
Above all, it is not recommended to delete the hidden partition. If you would like to delete it when creating the system, refer
to the part "When will the Windows 7 installation process create the 100MB hidden partition? " listed above to prevent installation process create it.
If you would like to delete that partition after installing Windows 7, you will need to manually create boot files on system partition
first. Here are the detailed steps:
I.Start Windows 7, click
Start button, type "CMD " (without quotation marks) into the Search box, right click on it and choose
Run as administrator .
II.Type "bcdboot c:\windows /s c: " (It means copy the boot files of the system "c:\windows " to drive
c . If system is not installed in c:\ you need to change the path).
You will get a message "boot files successfully created".
III.Open Disk Management by inputting "diskmgmt.msc " in Search box, locate the main
C:\ partition and mark that active instead of the hidden partition.
Disk Management . You can delete the hidden 100MB partition which is no longer being used.
Microsoft is conducting an online survey to understand your opinion of the Technet Web site. If you choose to participate, the online survey will be presented to you when you leave the Technet Web site.