fix the disk size warning (#52802)

Author: tonytrg

content/admin/overview/system-overview.md

@@ -25,7 +25,7 @@ topics:
 
 The root filesystem is included in the distributed machine image. It contains the base operating system and the {% data variables.product.product_name %} application environment. The root filesystem should be treated as ephemeral. Any data on the root filesystem will be replaced when upgrading to future {% data variables.product.product_name %} releases.
 
-The root storage volume is split into two equally-sized partitions. One of the partitions will be mounted as the root filesystem (`/`). The other partition is only mounted during upgrades and rollbacks of upgrades as `/mnt/upgrade`, to facilitate easier rollbacks if necessary. For example, if a 200GB root volume is allocated, there will be 100GB allocated to the root filesystem and 100GB reserved for the upgrades and rollbacks.
+The root storage volume is split into two equally-sized partitions. One of the partitions will be mounted as the root filesystem (`/`). The other partition is only mounted during upgrades and rollbacks of upgrades as `/mnt/upgrade`, to facilitate easier rollbacks if necessary. For example, if a {% ifversion ghes > 3.14 %}400GB root volume is allocated, there will be 200GB allocated to the root filesystem and 200GB{% else %}200GB root volume is allocated, there will be 100GB allocated to the root filesystem and 100GB{% endif %} reserved for the upgrades and rollbacks.
 
 {% ifversion ghes > 3.13 %}In new installations of 3.14 and later, the root storage volume is split into four partitions. Two small partitions are for the supported boot modes (BIOS and UEFI), and the other two equally large partitions are for the {% data variables.product.product_name %} primary, and upgrades and rollbacks.{% endif %}
 

data/reusables/enterprise_installation/hardware-considerations-all-platforms.md

@@ -21,7 +21,7 @@ We recommend a high-performance SSD with high input/output operations per second
 Your instance requires a persistent data disk separate from the root disk. For more information, see "[AUTOTITLE](/admin/overview/system-overview)."
 
 >[!WARNING]
->Root storage refers to the total size of your instance's root disk. When the instance is booted you will see 200GB available on the root filesystem. The remaining 200GB is reserved for upgrades. For more information, see "[AUTOTITLE](/admin/overview/system-overview#storage-architecture)."
+>Root storage refers to the total size of your instance's root disk. When the instance is booted you will see {% ifversion ghes > 3.14 %}200GB available on the root filesystem. The remaining 200GB{% else %}100GB available on the root filesystem. The remaining 100GB{% endif %} is reserved for upgrades. For more information, see "[AUTOTITLE](/admin/overview/system-overview#storage-architecture)."
 
 {% ifversion ghes %}