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I have a drive with 2 FAT partitions and 2 RAW partitions. Windows recognizes 2 partitions and I can list files in them. Other 2 have "H:\ is not accessible. The disk structure is corrupted or unreadable". On one of those RAW partitions is WinNT filesystem. I need not only to recover files, but to be able to boot to WinNT.
TestDisk 7.2 sees RAW partitions as HPFS - NFTS.

After quick scanning and selecting Intel/PC partition and analyse it shows:
check_FAT: Unusual number of reserved sectors 8 (FAT), should be 1.
FAT16 >32M 0 32 33 65 101 28 1048568 [DOS]
check_FAT: Unusual number of reserved sectors 8 (FAT), should be 1.
check_FAT: Unusual number of reserved sectors 8 (FAT), should be 1.
FAT16 >32M 65 134 6 326 141 47 4193448 [TMP]
HPFS - NTFS 326 155 22 518 155 21 3084480
HPFS - NTFS 518 184 51 1223 184 50 11325825

Selecting partition and pressing ENTER to continue, I get "No partition found or selected for recovery"


Deep scan shows
Disk \\.\PhysicalDrive1 - 512 GB / 476 GiB - CHS 62260 255 63
Partition Start End Size in sectors
>D FAT16 >32M 0 32 33 65 101 36 1048576 [DOS]
D FAT32 LBA 0 32 33 4177 117 36 67108864 [NO NAME]
D FAT16 >32M 65 134 6 326 155 21 4194304 [TMP]
D HPFS - NTFS 326 155 22 518 184 50 3086336
D HPFS - NTFS 326 184 51 518 184 50 3084480
D HPFS - NTFS 518 184 51 1223 211

Selecting any NTFS and pressing P - list files it reports: Can't open filesystem. Filesystem seems damaged.

Is it possible to make bootable RAW partition?

If even Testdisk is unable to list the content of the partition that you would like to boot from, trying to make that broken partition bootable is a simple waste of time.

But TestDisk -> Advanced (FilesystemUtils) -> partition -> Boot shows Boot sector OK.

I have files recovered in original folder structure. It this beneficial is some way?

Armin wrote: 23 May 2022, 07:23 But TestDisk -> Advanced (FilesystemUtils) -> partition -> Boot shows Boot sector OK.

That is insufficient.
https://en.wikipedia.org/wiki/Rosetta_Stone
Being able to translate the first word does not make the rest readible for you.

I have files recovered in original folder structure. It this beneficial is some way?

Yes, because you got at least parts of your broken data.