It would appear that you have managed to set this up as a logical drive!
• Windows XP supports two main partition TYPES: Primary and Extended.
• Windows XP supports three file systems NTFS, FAT32 and FAT [the latter 2
being introduced with earlier Windows systems].
• A primary partition is one from which one can boot up an Operating System.
• All four partitions can be designated as Primary [or bootable, should one
wish to install more than one Operating System, such as XP, 98, Linux etc].
• One primary partition at a time must be marked as ‘Active’ designating it
as the one from which the computer will boot: in almost all cases this should
be the ‘C-Drive’.
• One partition can be allocated as an Extended Partition. These differ in
that they are not formatted with a file system or assigned a specific drive
letter [‘D’, thru to ‘Z’].
• An Extended Partition is then a dedicated area of disk space in which one
can then create a number of Logical Drives.
• Logical Drives are similar to primary partitions in that they are
individually formatted with a file system and assigned a drive letter: thus
an extended partition can have an unlimited number of Logical Drives each
with its own drive letter, none of the Logical drives is bootable.
To correct this use Disk Management [under Device Management] - click Start>
Run>
Type in compmgmt.msc and press OK button
Click on Disk Management and inspect the Properties for the G & I drives.
You can change it's properties here.