Hi kr236rk,
I understand GX 270 has a SATA port but case doesn't have enough space to add another harddrive. This leads to 3 options for upgrading the harddrive on the system:
1. Upgrade to bigger IDE harddrive only.
2. Remove the Floppy drive and add a SATA harddrive on the same slot.
3. Simply connect a USB harddrive.
If you require to add only space on the system you should use a USB external harddrive which is easy and doesn't require to open the system.
Hope this answers your query. If you have any further queries, please feel free to contact us.
Thanks and Regards
Sandeep P
#iworkfordell