Kontron AM4022 uEFI BIOS - Manual (Page 64)

The uEFI Shell AM4022 uEFI BIOS
Page 58 ID 1052-1333, Rev. 1.0
6.2.9 kmkramdisk uEFI Shell Command
kmkramdisk
FUNCTION: Create RAMdisk drives
SYNTAX:
kmkramdisk [-?|-s ]
where:
-? show help
-s create a RAMdisk of given size in Megabytes with
the mount point name
DESCRIPTION: Creates a RAMdisk of variable size. Can be very useful to perform file
operations when no real filesystem is connected to the system.
Note: The RAMdisk loses its mount point name after all drives are
remapped by the map -r command. The RAMdisk will then be
enumerated as any other connected drive and gain a mount point
name like “fs0”. This is not a bug of the kmkramdisk command
but a normal function of the uEFI framework.
USAGE: Create RAMdisk:
COMMAND / RESPONSE:
rd:\> kmkramdisk -s 5 myramdisk
Device mapping table
myramdisk :BlockDevice - Alias (null)
VenMsg’(93B5F448-127A-4B29-B306-
5BE8AAC4826E)
Success - Force file system to mount
rd:\> myramdisk:
myramdisk:\> echo testfile > testfile
myramdisk:\> ls
Directory of: myramdisk:\
05/24/08 04:39a 22 testfile
1 File(s) 22 bytes
0 Dir(s)