Re: [Bug-xorriso] Acer Aspire V5-121 doesn't see USB ISO as bootable

[Thomas Schmitt]

Hi,

the changeset has a copy+paste error:

+                    if (j >= 4)
+                        slot_unused = 1;
+                        slot_unused = 1;

The second "slot_unused = 1;" would spoil everything, of course.

So the change should look like:
=======================================================================
--- libisofs/system_area.c      2017-02-27 09:01:09 +0000
+++ libisofs/system_area.c      2017-02-27 12:24:50 +0000
@@ -1799,7 +1799,7 @@
     int ret, int_img_blocks, sa_type, i, will_append = 0, do_isohybrid = 0;
     int first_partition = 1, last_partition = 4, apm_flag, part_type = 0;
     int gpt_count = 0, gpt_idx[128], apm_count = 0, no_boot_mbr = 0;
-    int offset_flag = 0, risk_of_ee = 0;
+    int offset_flag = 0, risk_of_ee = 0, slot_unused, j;
     uint32_t img_blocks, gpt_blocks, mbrp1_blocks, pml_blocks;
     uint64_t blk;
     uint8_t *wpt;
@@ -2125,7 +2125,15 @@
         break;
         if (i >= 4) { /* no bootable/active flag set yet */
             for (i = 0; i < 4; i++) {
-                if (buf[446 + 16 * i + 4] != 0x00 &&
+                slot_unused = 0;
+                if (buf[446 + 16 * i + 4] == 0x00) {
+                    for (j= 0; j < 4; j++)
+                        if (buf[446 + 16 * i + 12 + j] != 0x00)
+                    break;
+                    if (j >= 4)
+                        slot_unused = 1;
+                }
+                if ((!slot_unused) &&
                     buf[446 + 16 * i + 4] != 0xee &&
                     buf[446 + 16 * i + 4] != 0xef) {
                     buf[446 + 16 * i] |= 0x80;
=======================================================================


Have a nice day :)

Thomas