You show no Linux partition.
Windows has for years with MBR partitioning, "forgets" to write partition table on updates to include Linux partitions.
I think this is the first time I have seen this with gpt. They must have added the "bug" to newer partitioning tools to make sure to frustrate Linux users.
You have a large gap where you Linux partition(s) were. If more than one partition a bit more complicated.
Code:
/dev/sda3 468,992 83,886,767 83,417,776 Data partition (Windows/Linux)
/dev/sda4 223,890,096 250,065,583 26,175,488 Data partition (Windows/Linux)
backup partition table before any changes, so you can get back to current if changes not correct
sudo sfdisk -d /dev/sda > PT_sda.txt
So you know sectors:
sudo parted /dev/sda unit s print
Check to see if backup gpt partition table was also incorrectly rewritten. Windows does not always see backup gpt table.
sudo gdisk -l /dev/sda
If not you can see what testdisk shows or use parted rescue.
With parted rescue and if one partition the start of missing partition will be a few sectors after sda3 and end just before sda4. Partitions have been renumbered, but that in most cases does not matter as UUID or GUID are correct ways to refer to partitions. You may have to totally reinstall grub also, using Boot-Repair's advanced mode.
Used parted rescue
https://ubuntuforums.org/showthread.php?t=2362656
http://ubuntuforums.org/showthread.php?t=2315405
Windows 7 to Windows 10 MBR partition missing
http://ubuntuforums.org/showthread.php?t=2288988 &
http://ubuntuforums.org/showthread.php?t=2290190
http://ubuntuforums.org/showthread.php?t=2292545
Use parted rescue to restore missing partition details in post #22
http://ubuntuforums.org/showthread.php?t=1775331
https://www.gnu.org/software/parted/...ed.html#rescue
http://gparted.sourceforge.net/faq.php/#faq-22
Parted rescue seems easier than testdisk
https://askubuntu.com/questions/6654...untu-partition
Recently have seen several users using AOMEI having this issue. Best to only use Windows tools to shrink a NTFS partition and that from inside Windows. And then use gparted for everything else.
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