Question Dual OS, both drives visible from one OS, from the other OS only one visible.

[DennisSHG]

So i am running a Laptop, i have a SSD and a HDD, so i have Windows on my SSD and a custom Firmware on my HDD, and i Need to Access the SSD from my HDD OS. So the Problem is, when i boot from the OS on my SSD, everything works fine, i see both drives and everything is good, however when i boot the HDD, i can see the HDD, but i cant Access the SSD, although the only reason i coded the OS, was to do stuff on my SSD, please someone help.

 

[popatim]

On the OS that doesn't show the other drive, run diskmgmt.msc and you should see the drive listed in the lower section. Right click on that drives main partition and assign it a drive letter. Don't assign the other partitions letters unless you specifically made extra ones for something like game installs.

Don't worry, it will still be C: when you boot from it.

 

[popatim]

There could be an issue with the OS not being compatible with the OS on the SSD.

If assigning a drive letter didn't fix the issue: Which SSD is this, Which OS is where, and what formats are the drives in?

 

[USAFRet]

What is the "OS" on the each of these drives?