Welcome to Manjaro!
There are no A: and B: drives under Linux, but there is HD0 and HD1 or SDA and SDB etc. Please read this:
Please read this because imgur links donāt work without cookies and Iām a privacy nutcase:
Do you have some kind of system backup including an MBR/GPT backup?
If not, please post the āHow it was beforeā as text, please⦠(I.E. a picture of how the disk partitions looked like before is of no help: we need the exact sizes with a precision of 1 MByte to recreate what you had before)
I.E. something like this:
sudo parted --machine /dev/sda unit MB print;
BYT;
/dev/sda:256061MB:scsi:512:512:gpt:ATA Micron_1100_MTFD:;
1:1.05MB:106MB:105MB:fat32:EFI system partition:boot, esp;
2:106MB:123MB:16.8MB::Microsoft reserved partition:msftres;
3:123MB:51662MB:51540MB:ntfs:Basic data partition:msftdata;
4:51662MB:52736MB:1074MB:ntfs:Basic data partition:hidden, diag;
5:52736MB:104276MB:51540MB:ext4::;
6:104276MB:224100MB:119824MB:ext4::;
7:234585MB:256060MB:21475MB:linux-swap(v1)::swap;
Also, please ensure you have an additional disk disk larger than or identical to the disk you want to recover: Weāre not going to touch the original but work off a copy so in case we mess up we can take another copy leaving all data intact on the original!!!