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Support Lenovo BIOS Update CD (#729)

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This commit is contained in:
longpanda 2021-02-02 23:54:01 +08:00
parent 66d5946bd1
commit dccefc5277
1 changed files with 13 additions and 0 deletions
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13
GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c
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@ -2266,6 +2266,7 @@ int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
int i; int i;
int x86count = 0; int x86count = 0;
grub_uint8_t buf[512]; grub_uint8_t buf[512];
grub_uint8_t parttype[] = { 0x04, 0x06, 0x0B, 0x0C };
grub_file_seek(file, sector * 2048); grub_file_seek(file, sector * 2048);
grub_file_read(file, buf, sizeof(buf)); grub_file_read(file, buf, sizeof(buf));
@ -2296,6 +2297,18 @@ int ventoy_has_efi_eltorito(grub_file_t file, grub_uint32_t sector)
} }
} }
if (x86count && buf[32] == 0x88 && buf[33] == 0x04)
{
for (i = 0; i < (int)(ARRAY_SIZE(parttype)); i++)
{
if (buf[36] == parttype[i])
{
debug("hard disk image assume %s efi eltorito, part type 0x%x\n", file->name, buf[36]);
return 1;
}
}
}
debug("%s does not contain efi eltorito\n", file->name); debug("%s does not contain efi eltorito\n", file->name);
return 0; return 0;
} }