diff --git a/README.md b/README.md
index 6dc4ba2f4..95660d108 100644
--- a/README.md
+++ b/README.md
@@ -148,6 +148,12 @@ supported VM/Sandbox monitors and unikernels:
 | Linux     | QEMU, Firecracker          | x86         | Initrd, Block/Devmapper, 9pfs, Virtiofs |
 | Hermit    | QEMU                       | x86         | Initrd                                  |
 
+The `Storage` column summarizes the storage modes supported by each
+guest across the listed monitors. Not every storage mode in a row is
+available on every monitor. For monitor-specific limitations, such as
+Firecracker only supporting initramfs today, refer to the
+[hypervisor support guide](https://urunc.io/hypervisor-support/).
+
 We plan to add support for more unikernel frameworks and other platforms too.
 Feel free to [contact](#Contact) us for a specific unikernel framework or similar
 technologies that you would like to see in `urunc`.
diff --git a/docs/index.md b/docs/index.md
index 7dd2ec6a9..d120b70d8 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -62,6 +62,11 @@ Sandbox monitors, along with the unikernels that can run on top of them.
 | [Linux](./unikernel-support#linux)| [Qemu](./hypervisor-support#qemu), [Firecracker](./hypervisor-support#aws-firecracker) | x86, aarch64 | Initrd, Block/Devmapper, 9pfs, Virtiofs |
 | [Hermit](./unikernel-support#hermit)| [Qemu](./hypervisor-support#qemu) | x86 | Initrd |
 
+The `Storage` column summarizes the storage modes supported by each
+guest across the listed monitors. Not every storage mode in a row is
+available on every monitor. For monitor-specific limitations, refer to
+the [hypervisor support guide](./hypervisor-support.md).
+
 <!-- ## urunc and the CNCF -->
 
 ## Community and Meetings