:: commit f3247cb530b421cfbe2128526d5f25f899cbb17a

diff --git a/common/drivers/disk.s2.c b/common/drivers/disk.s2.c
index 29d80a02..4b66ab28 100644
--- a/common/drivers/disk.s2.c
+++ b/common/drivers/disk.s2.c
@@ -396,7 +396,7 @@ static struct volume *pxe_from_efi_handle(EFI_HANDLE efi_handle) {
 }
 
 #define UNIQUE_SECTOR_POOL_SIZE 65536
-static alignas(4096) uint8_t unique_sector_pool[UNIQUE_SECTOR_POOL_SIZE];
+static uint8_t *unique_sector_pool;
 
 static struct volume *volume_by_unique_sector(void *b2b) {
     for (size_t i = 0; i < volume_index_i; i++) {
@@ -587,6 +587,8 @@ static void find_part_handles(EFI_HANDLE *handles, size_t handle_count) {
 void disk_create_index(void) {
     EFI_STATUS status;
 
+    unique_sector_pool = ext_mem_alloc(UNIQUE_SECTOR_POOL_SIZE);
+
     EFI_HANDLE tmp_handles[1];
 
     EFI_GUID block_io_guid = BLOCK_IO_PROTOCOL;