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Fix a bug when use workaround for Legacy BIOS access limitation with GPT partition style

This commit is contained in:
longpanda 2021-01-08 20:08:32 +08:00
parent 44bb72ca0a
commit 7cdc7386a8
1 changed files with 18 additions and 5 deletions
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23
GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c
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@ -1772,12 +1772,25 @@ int ventoy_check_device(grub_device_t dev)
if (workaround)
{
ventoy_part_table *PartTbl = g_ventoy_part_info->MBR.PartTbl;
if (PartTbl[1].StartSectorId != PartTbl[0].StartSectorId + PartTbl[0].SectorCount ||
PartTbl[1].SectorCount != 65536)
if (grub_strncmp(g_ventoy_part_info->Head.Signature, "EFI PART", 8) == 0)
{
grub_file_close(file);
return ventoy_check_device_result(6);
ventoy_gpt_part_tbl *PartTbl = g_ventoy_part_info->PartTbl;
if (PartTbl[1].StartLBA != PartTbl[0].LastLBA + 1 ||
(PartTbl[1].LastLBA + 1 - PartTbl[1].StartLBA) != 65536)
{
grub_file_close(file);
return ventoy_check_device_result(6);
}
}
else
{
ventoy_part_table *PartTbl = g_ventoy_part_info->MBR.PartTbl;
if (PartTbl[1].StartSectorId != PartTbl[0].StartSectorId + PartTbl[0].SectorCount ||
PartTbl[1].SectorCount != 65536)
{
grub_file_close(file);
return ventoy_check_device_result(6);
}
}
}
else