possibly the 1000th time that this question pops up, but I can't get it to work...
After fiddling around with dualboot, changing parameters in the BIOS and so on I finally managed to get my Win 10 System to not work any more. The Disc appears in the BIOS but it won't boot from there any more.
First step was to try the Win10 USB repair, at some point a guide required to
"c:\Windows /l de-de /s B: /f ALL"
but this didn't work because I cannot access/read the drive anymore.
Then I found diskpart.
EFI/GPT was found on the disc, here's the first Output
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Disk /dev/sdb - 128 GB / 119 GiB - CHS 15566 255 63
Current partition structure:
Partition Start End Size in sectors
Bad GPT partition entries, invalid checksum.
Trying alternate GPT
1 P Windows Recovery Env 2048 616447 614400 [Basic data partition]
2 P EFI System 616448 821247 204800 [EFI system partition]
No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker
3 P MS Reserved 821248 1083391 262144 [Microsoft reserved partition]
3 P MS Reserved 821248 1083391 262144 [Microsoft reserved partition]
4 P MS Data 1083392 246614878 245531487 [Basic data partition]
5 P Windows Recovery Env 246616064 248223743 1607680
6 P Windows Recovery Env 249147392 250068991 921600
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Disk /dev/sdb - 128 GB / 119 GiB - CHS 15566 255 63
The harddisk (128 GB / 119 GiB) seems too small! (< 253 GB / 236 GiB)
Check the harddisk size: HD jumper settings, BIOS detection...
The following partition can't be recovered:
Partition Start End Size in sectors
> MS Data 248225791 495368190 247142400
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Disk /dev/sdb - 128 GB / 119 GiB - CHS 15566 255 63
Partition Start End Size in sectors
>P MS Data 2048 616447 614400 [Wiederherstellung]
P MS Data 616448 821247 204800 [NO NAME]
D MS Data 1083392 246614878 245531487
D MS Data 1083392 248225791 247142400
D MS Data 245008385 246616064 1607680
D MS Data 246616064 248223743 1607680
D MS Data 247304193 248225792 921600
D MS Data 248225792 249147391 921600
D MS Data 248225793 249147392 921600
D MS Data 249147392 250068991 921600
Structure: Ok. Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
P=Primary D=Deleted
Keys A: add partition, L: load backup, T: change type, P: list files,
Enter: to continue
NTFS, blocksize=4096, 314 MB / 300 MiB
I don't Need the disk to be bootable, I just need access to the data in order to secure some important files.
Help would be much appreciated!
Thank you
Mark