diff --git a/INTERFACES.sh b/INTERFACES.sh
index 2588860..f0a0069 100644
--- a/INTERFACES.sh
+++ b/INTERFACES.sh
@@ -30,7 +30,7 @@ HIPERISO_NET_DUMP=""        # "1" = add virtio-net + pcap capture to network.pca
 
 # ── USB Partition Layout ─────────────────────────────────────────────────────
 DATA_PART="/dev/sdX1"       # Partition 1: Data partition (exFAT/NTFS, rest of disk)
-EFI_PART="/dev/sdX2"        # Partition 2: EFI System Partition (FAT16, 32MB)
+EFI_PART="/dev/sdX2"        # Partition 2: EFI System Partition (FAT16, 64MB)
 EFI_MOUNT="/mnt/efi"         # Mount point for ESP during install
 DATA_MOUNT="/mnt/usb"        # Mount point for data partition at runtime
 
diff --git a/README.md b/README.md
index 909a78a..427ffda 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ layout is:
 | # | Type   | FS     | Size   | Contents                                   |
 |---|--------|--------|--------|--------------------------------------------|
 | 1 | 0700   | exFAT  | rest   | Your ISOs + boot logs + config             |
-| 2 | EF00   | FAT16  | 32 MB  | ESP: GRUB2, kernel, initramfs, OVMF        |
+| 2 | EF00   | FAT16  | 64 MB  | ESP: GRUB2, kernel, initramfs, OVMF        |
 
 Copy your ISOs:
 
diff --git a/src/grub2/hiperiso_cmd.c b/src/grub2/hiperiso_cmd.c
index cc0187c..1c6d1ef 100644
--- a/src/grub2/hiperiso_cmd.c
+++ b/src/grub2/hiperiso_cmd.c
@@ -629,7 +629,7 @@ static int hiperiso_check_official_device(grub_device_t dev)
         {
             hiperiso_gpt_part_tbl *PartTbl = g_hiperiso_part_info->PartTbl;
             if (PartTbl[1].StartLBA != PartTbl[0].LastLBA + 1 ||
-                (PartTbl[1].LastLBA + 1 - PartTbl[1].StartLBA) != 65536)
+                (PartTbl[1].LastLBA + 1 - PartTbl[1].StartLBA) != 131072)
             {
                 grub_file_close(file);
                 return hiperiso_set_check_result(6, "Disk partition layout check failed.");
@@ -639,7 +639,7 @@ static int hiperiso_check_official_device(grub_device_t dev)
         {
             hiperiso_part_table *PartTbl = g_hiperiso_part_info->MBR.PartTbl;
             if (PartTbl[1].StartSectorId != PartTbl[0].StartSectorId + PartTbl[0].SectorCount ||
-                PartTbl[1].SectorCount != 65536)
+                PartTbl[1].SectorCount != 131072)
             {
                 grub_file_close(file);
                 return hiperiso_set_check_result(6, "Disk partition layout check failed.");
@@ -650,7 +650,7 @@ static int hiperiso_check_official_device(grub_device_t dev)
     {
         offset = partition->start + partition->len;
         partition = file->device->disk->partition;
-        if ((partition->number != 1) || (partition->len != 65536) || (offset != partition->start))
+        if ((partition->number != 1) || (partition->len != 131072) || (offset != partition->start))
         {
             grub_file_close(file);
             return hiperiso_set_check_result(7, "Disk partition layout check failed.");
diff --git a/src/grub2/hiperiso_def.h b/src/grub2/hiperiso_def.h
index 3c4a0eb..d5d4457 100644
--- a/src/grub2/hiperiso_def.h
+++ b/src/grub2/hiperiso_def.h
@@ -1214,7 +1214,7 @@ int hiperiso_unregister_all_cmd(void);
 int hiperiso_chain_file_size(const char *path);
 int hiperiso_chain_file_read(const char *path, int offset, int len, void *buf);
 
-#define HISO_CMD_CHECK(a) if (33554432 != g_hiperiso_disk_part_size[a]) hiperiso_syscall0(exit)
+#define HISO_CMD_CHECK(a) if (67108864 != g_hiperiso_disk_part_size[a]) hiperiso_syscall0(exit)
 
 #define hiso_theme_random_boot_second  0
 #define hiso_theme_random_boot_day     1
diff --git a/src/gui/Core/hiperiso_define.h b/src/gui/Core/hiperiso_define.h
index ac9cca0..b1f803c 100644
--- a/src/gui/Core/hiperiso_define.h
+++ b/src/gui/Core/hiperiso_define.h
@@ -28,8 +28,8 @@
 #define HISOIMG_PART_START_BYTES    (1024 * 1024)
 #define HISOIMG_PART_START_SECTOR   2048
 
-#define HISOEFI_PART_BYTES    (32 * 1024 * 1024)
-#define HISOEFI_PART_SECTORS  65536
+#define HISOEFI_PART_BYTES    (64 * 1024 * 1024)
+#define HISOEFI_PART_SECTORS  131072
 
 #pragma pack(1)
 
diff --git a/src/hisocli/hisocli.h b/src/hisocli/hisocli.h
index 6d21895..82b6e0c 100644
--- a/src/hisocli/hisocli.h
+++ b/src/hisocli/hisocli.h
@@ -24,7 +24,7 @@
 #define HIPERISO_EFI_PART_ATTR   0x8000000000000000ULL
 
 #define SIZE_1MB   (1024 * 1024)
-#define HIPERISO_EFI_PART_SIZE   (32 * SIZE_1MB)
+#define HIPERISO_EFI_PART_SIZE   (64 * SIZE_1MB)
 
 #define check_free(p) if (p) free(p)
 #define check_close(fd) if (fd >= 0) close(fd)
diff --git a/src/installer/tool/hiperiso_lib.sh b/src/installer/tool/hiperiso_lib.sh
index e3caa4b..59cf8f1 100644
--- a/src/installer/tool/hiperiso_lib.sh
+++ b/src/installer/tool/hiperiso_lib.sh
@@ -1,10 +1,10 @@
 #!/bin/sh
 
-#Hiperiso partition 32MB
-HIPERISO_PART_SIZE=33554432
-HIPERISO_PART_SIZE_MB=32
+#Hiperiso partition 64MB
+HIPERISO_PART_SIZE=67108864
+HIPERISO_PART_SIZE_MB=64
 HIPERISO_SECTOR_SIZE=512
-HIPERISO_SECTOR_NUM=65536
+HIPERISO_SECTOR_NUM=131072
 
 hiperiso_false() {
     [ "1" = "2" ]
diff --git a/src/plugson/src/Core/hiperiso_define.h b/src/plugson/src/Core/hiperiso_define.h
index aa77eb7..70384f7 100644
--- a/src/plugson/src/Core/hiperiso_define.h
+++ b/src/plugson/src/Core/hiperiso_define.h
@@ -44,8 +44,8 @@
 #define HISOIMG_PART_START_BYTES    (1024 * 1024)
 #define HISOIMG_PART_START_SECTOR   2048
 
-#define HISOEFI_PART_BYTES    (32 * 1024 * 1024)
-#define HISOEFI_PART_SECTORS  65536
+#define HISOEFI_PART_BYTES    (64 * 1024 * 1024)
+#define HISOEFI_PART_SECTORS  131072
 
 
 #pragma pack(1)