I ran the "Verify Disk", everything was fine and restart. it works
this problem had been solved. but another one came out after. lol
I can drag the divider, 5gb for win, 6gb for mac
but it had error when I started partition.
then I ran the "Verify Disk" again, but it had error this time
it said:
"Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
%)
Checking Extended Attributes file.
Checking volume bitmap.
Volume Bit Map needs minor repair
Checking volume information.
Invalid volume free block count
Invalid volume free block count
(It should be 2920836 instead of 2920833)",2)
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
"
But the "repair disk" buttom is disabled, I can't repair it.