IBM 88554RU Installation Guide - Page 180

scsi_mod mptscsih sd_mod] 229248 6 [usb-storage sg sr_mod ide-scsi Partitions on IA-64 Linux The EFI system implements a new way to work with partitions. That means that the IA-32 tools to manage partitions on Linux may not work properly. For example, if you run fdisk to see the content of a partition or disk, you do not see the real content of the disks. Modifying this partition can destroy the Linux installation. Example 4-5 shows the fdisk output for our test partitions. We had two arrays RAID level 1, each per server, configured on the system: One to run Linux, and the other to run Windows 2003 Server. Tip: In our case the third partition (sdc) is a USB 256 MB memory key. Example 4-5 fdisk output of two EFI partitions Disk /dev/sda: 18.1 GB, 18117296128 bytes 255 heads, 63 sectors/track, 2202 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start /dev/sda1 1 End Blocks Id System 2203 17692671+ ee EFI GPT Disk /dev/sdb: 18.1 GB, 18117296128 bytes 255 heads, 63 sectors/track, 2202 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start /dev/sdb1 1 End Blocks Id System 2203 17692671+ ee EFI GPT Disk /dev/sdc: 262 MB, 262144000 bytes 16 heads, 32 sectors/track, 1000 cylinders Units = cylinders of 512 * 512 = 262144 bytes Device Boot Start /dev/sdc1 * 1 End Blocks Id System 999 255728 6 FAT16 The two disks included more than one partition. In fact, there were at least three partitions on each: One for EFI, one for the operating system boot images, and another for the data. As you can see in the example, fdisk does not see any of these partitions, but only a big partition of type EFI GPT. 166 IBM xSeries 455 Planning and Installation Guide Eserver