IBM s/390 manual Second disk planning

We partitioned the disk with fdisk and formatted it:

# fdisk /dev/hdc
n			(fdisk option to add a partition)
Command action: p			(a primary partition)
Partition number: 1
First cylinder (1-66144): 1			(default = 1)
Last cylinder (1-66144): 4140			(this makes a partition of about 2 GB)
n			(fdisk option to add a partition)
Command action: p			(another primary partition)
First cylinder (4141-66144): 4141
Last cylinder (4141-66144): 66144
p			(print the partition table)
Device Boot	Start	End	Blocks	ID	System
/dev/hdc1	1	4140	1956118+	83	Linux native
/dev/hdc2	1414	66144	29296880	83	Linux native
(if the ID is not 83 = Linux native, use the t option to change it)
t			(fdisk option to change partition ID)
Partition number: 1
Hex code: 83			(83 is Linux native)
t
Partition number: 2
Hex code: 83
p			(fdisk option to list partitions)
w			(fdisk option to write partition table and end)
# mkdir /s391			(create a mount point, if not already done)
# mkdir /holding
# mke2fs /dev/hdc1			(format a file system)
# mke2fs /dev/hdc2			(format the other file system)
# mount /dev/hdc1 /holding			(mount it for Linux use)

#mount /dev/hdc2 /s391

#chown flexes:flexes /holding (change owner and group identities)

#chown flexes:flexes /s391

We used the new disk space to confirm that it worked, and then edited /etc/fstab to cause the new file systems to be automatically mounted at boot time. (There are no unwanted effects if the second hard disk is not present when Linux is booted; the file systems on that disk are simply not mounted.) We added two lines at the end of fstab:

LABEL=/	/	ext2	defaults	1	1
LABEL=/boot	/boot	ext2	defaults	1	2
/dev/fd0	/mnt/floppy	auto	noauto,owner	0	0
LABEL=/s390	/s390	ext2	defaults	0	0
none	/proc	proc	defaults	0	0
none	/dev/pts	devpts gid=5,mode=620		0	0
/dev/hda7	swap	swap	defaults	0	0
/dev/hdc1	/holding	ext2	defaults	0	0
/dev/hdc2	/s391	ext2	defaults	0	0

5.5.2 Second disk planning

It is unlikely that the second hard drive will always be installed when FLEX-ES is running. Although OS/390 does not use the CD-ROM drive or the diskette drive (the other possible occupants of the Ultrabay), you may find it inconvenient to shut down the ThinkPad to remove the CD-ROM drive or diskette drive and insert the second hard disk drive every time you want to run FLEX-ES.

Chapter 5. Additional Topics 43