1TB internal HDD not showing when using AHCI as BIOS Acer Nitro 5 model AN515-55.

SatyasaiNandigam

My Acer Nitro 5 model AN515-55 , comes with 256ssd and 1TB hdd. When I try to use ahci it only shows 256ssd and not showing the 1tb hdd which contains important files of my work. How can I get the other disk also to be accessable using AHCI.

It's my disk management. Disk 0 is not showing in ahci mode.

Thanks in advance

[Edited the title to add model name ]

JackE

1. First change BIOS back to VMD or iRST mode from ACHI
2. Make sure system still boots up OK and HDD is visible again
3. Press WIN+R. Enter 'msconfig'
4. In the boot tab, checkmark boot into safe mode.
5. Shut down Windows normally.
6. Turn machine back on and immediately tap F2 to enter BIOS menu
7. Change SATA mode form VMD or iRST to AHCI
8. Save BIOS settings and exit to boot into Safe Mode
9. Check that HDD is now visible again in Safe Mode
10. Press WIN+R. Enter 'msconfig'
11. In the boot tab uncheck the box for Safe Mode
12. Shut down Windows normally
13. Turn it back on to boot into regular Windows
14. HDD should now be visible again in AHCI mode