Insight Info:
If you want to have the 350 MB System Reserved partition in addition to the Windows 8 C: partition on a HDD or SSD after installation, then you would need to make sure that all partitions on the drive have been deleted until it is only unallocated space. Next, select the unallocated drive to install Windows 8 on. If there are no partitions on the disk, you will get the 350 MB System Reserved.
If you do not want to have the 350 MB System Reserved partition and only the Windows 8 C: partition on a HDD or SSD after installation, then select a formatted partition or drive to install Windows 8 on. If there are any partitions on the disk, you won't get the 350 MB System Reserved.
In my cleint's 5920g laptop when i booted form Vista Setup i deleted all available partiton except the [Files partition] and then hit enter on unallocated space above.
Acording to the info i provided above, since i left over a partition, thats why Win8 didn't notify me that it must create system reserved.
Then, files copied ok, but no system rserver partion created, menaing no BCD records thus failed to boot.
Do you agree?