There are also utilities to partition and format.

https://www.intel.com/content/www/us/en/download/714351/uefi-shell-disk-utilities.html

Mike

From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Andrew Fish via groups.io
Sent: Friday, March 29, 2024 3:11 PM
To: devel@edk2.groups.io; yuinyee.chew@starfivetech.com
Subject: Re: [edk2-devel] Is there a way to create filesystem in UEFI Shell ?

MdeModulePkg/Universal/Disk/RamDiskDxe/RamDiskDxe.inf is a virtual storage device, so it just emulates an unformatted disk. You would need to partition or initialize the file system given you have a RAM disk.

The file system driver lives here: https://github.com/tianocore/edk2/tree/master/FatPkg/EnhancedFatDxe

The ArmPkg has a driver that lets you do a file system over JTAG: https://github.com/tianocore/edk2/blob/master/ArmPkg/Filesystem/SemihostFs/Arm/

You can make a ReadOnly file system out of contents on an FV (Firmware Volume): https://github.com/tianocore/edk2/tree/master/MdeModulePkg/Universal/FvSimpleFileSystemDxe

FV is defined in the PI Spec as a layout for flash that contains files, but no directories.

Thanks,

Andrew Fish

On Mar 29, 2024, at 1:21 AM, John Chew <yuinyee.chew@starfivetech.com> wrote: