IBM 88554RU Installation Guide - Page 112
Start the EFI shell from the EFI Firmware Boot Manager menu., map -r
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Tip: All the EFI executable files have an extension of .EFI. The executables may be run only from within EFI, not from within any operating system. Access to the file system on a device is done through the FSn: command (where n is the file system number shown in the device mapping table). This is similar in concept to changing drive letters in DOS. You can use the map command at any time to remind yourself of the available file systems. Tip: Adding or removing media may cause arbitrary reassignments of the FSx designations. Always make sure that you access the right media by issuing the map command or map -r if media has been added or removed. As an example of the capability of accessing file systems, the following are the steps to access data stored on the USB memory key device: 1. Insert the USB memory key into the USB port (can be hot-added). 2. Start the EFI shell from the EFI Firmware Boot Manager menu. 3. Use the map command to identify the appropriate mapping for the USB device the EFI automatically created. Sample output of the command is in Figure 4-4. If the appropriate mapping does not appear, run map -r, where parameter -r forces EFI to refresh the device mapping table. Shell> map Device Mapping Table fs0 : MemMap(0:FF000000-FFFFFFFF) fs1 : MemMap(0:FF800200-FFBFFFFF) fs2 : Acpi(PNP0A03,0)/Pci(5|2)/Usb(0, 0)/HD(Part1,Sig00000000) blk0 : MemMap(0:FF000000-FFFFFFFF) blk1 : MemMap(0:FF800200-FFBFFFFF) blk2 : Acpi(PNP0A03,0)/Pci(5|1)/Ata(Primary,Master) blk3 : Acpi(PNP0A03,0)/Pci(5|1)/Ata(Primary,Slave) blk4 : Acpi(PNP0A03,1)/Pci(3|0)/Scsi(Pun0,Lun0) blk5 : Acpi(PNP0A03,0)/Pci(5|2)/Usb(0, 0) blk6 : Acpi(PNP0A03,0)/Pci(5|2)/Usb(0, 0)/HD(Part1,Sig00000000) Figure 4-4 Map command 98 IBM xSeries 455 Planning and Installation Guide Eserver
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