dual boot mess after easybcd . How to fix this using Linux


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Installed EasyBCD that dual booted windows 10 and linux partitions. Later on boot menu showed up via grub. Now when I tried to boot windows 10 I get ths error .

Failed to start ....ya-da-ya file : \boot\bcd error : 0xc0000098
I can easily access the windows boot partition and mount it RW on Linux and so I'd like to know how do I fix this from the Linux Partition as against creating a new boot CD or USB to fix the issue. Here is my partiton layout
/root # fdisk -l /dev/sda
Disk /dev/sda: 149.5 GiB, 160041885696 bytes, 312581808 sectors
Disk model: TOSHIBA MK1655GS
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 104447 102400 50M 7 HPFS/NTFS/exFAT
/dev/sda2 104448 162797677 162693230 77.6G 7 HPFS/NTFS/exFAT
/dev/sda3 162799616 163839999 1040384 508M 27 Hidden NTFS WinRE
/dev/sda4 163840000
/dev/sda4 163840000 312580095 148740096 70.9G 5 Extended
/dev/sda5 163846935 180201104 16354170 7.8G 83 Linux
the 1st partiton of 50MB is boot
How do I fix this from within Linux partiton
Few hiotherto observations :

--- When I got dual boot from EasyBCD to work and then I got the same thing inc. in grub menu ..when going to Windows parton it use to appear to shutdown and then reboot to windows .

-- Windows 10 has many boot options .e.g. safe boot with networking etc . I added seperate menus for each via EasyBCD and that is when things fell apart.

-- I want Grub to boot both Linux and windows



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