boot PROM 11.1 boot PROM

Transcription

1 11.1 boot PROM boot PROM PROM programmable read-only memory, SUN 11.2 NVRAM NVRAM- Non-volatile random access memory, EEPROM(electronically erasable programmable read-only memory) boot PROM

2

3 11.3 PROM monitor provides a user interface commands. Some commonly used commands: ok banner ok boot ok help ok printenv ok setenv ok reset

4 ok set-defaults ok probe-ide ok probe-scsi ok probe-scsi-all

5 11.4 banner Command #banner Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 270MHz), Keyboard Present OpenBoot 3.11, 128 MB memory installed, Serial # Ethernet address 8:0:20:b5:98:25, Host ID: 80b59825.

6 11.5 boot Command use the boot command to boot the Solaris Operating Environment from the ok prompt. ok boot ok boot s ; s Boots the system to a single-user mode. ok boot -a ; a Boots the system interactively. ok boot r ; r Performs a reconfiguration boot. ok boot v ; v Boots the system while displaying more detailed device information to the console.

7 ok boot -a Enter filename of the kernel (kernel/unix): Enter default directory for modules (kernel, /usr/kernel): Enter name of system file (etc/system): Enter default root file system type (ufs): Enter physical name of root device:

8 11.6 printenv Command You use the printenv command to list all the NVRAM parameters.

9 11.7 setenv Command setenv command to change the current values assigned to NVRAM parameters. ok printenv auto-boot? auto-boot? = true ok ok setenv auto-boot? false auto-boot? = false ok reset Resetting...

10 11.8 reset Command boot PROM reset command halts the system, clears all buffers and registers, and does one of the following: Reboots the system if the auto-boot? parameter is set to true Re-displays the ok prompt if the auto-boot? parameter is set to false

11 11.9 set-defaults Command set-defaults command to reset all parameters to their default values. ok set-defaults Setting NVRAM parameters to default values. ok To reset only a specific parameter to its default value, use the set-default command. ok set-default parameter-name

12 11.10 View Device Path Names show-devs command to view the entire device tree.

13 Boot Disk Device Path Example boot PROM

14 11.11 probe- Commands to Identify Devices To identify the peripheral devices, such as disks, tape drives,or CD-ROMs, currently connected to the system, use these OBP commands: probe-ide probe-scsi probe-scsi-all probe-fcal-all

15 1. probe-scsi Command ok probe-scsi Target 3 Unit 0 Disk SEAGATE ST1480 SUN Target 6 Unit 0 Removable Read Only device SONY CDROM

16 2. probe-scsi-all Command ok probe-scsi-all Target 3 Unit 0 Disk FUJITSU MAB3045S SUN4.2G1907 Target 4 Unit 0 Removable Tape EXABYTE EXB- 8505SMBANSH20090

17 3. probe-ide Command ok probe-ide Device 0 ( Primary Master ) ATA Model : ST 34342A Device 1 ( Primary Slave ) Not Present Device 2 ( Secondary Master ) Removable ATAPI Model : CRD-8240B Device 3 ( Secondary Slave ) Not Present

18 11.12 devalias command boot PROM

19 11.13 Creating Custom Device Aliases ok nvalias aliasname device_path ok show-disks (select a disk from the list) ok nvalias mydisk /pci@1f,0/pci@1/pci@1/sunw,isptwo@4/sd@2,1 ok setenv boot-device mydisk boot-device = mydisk ok boot

20 11.14 Removing Custom Device Aliases remove a custom device alias name, use the command nvunalias. ok nvunalias aliasname ok nvunalias mydisk ok setenv boot-device disk boot-device = disk ok reset Resetting...

21 11.15 nvedit Command On Sun systems with PROM versions 1.x and 2.x, the nvalias command might not be available to create custom device alias names.

22 ok setenv use-nvramrc? true use-nvramrc? = true ok nvedit 0: devalias mydisk /pci@1f,0/pci@1,1/ide@3/disk@0,0 1: Control-c ok nvstore ok reset Resetting... ok boot mydisk

23 11.16 Changing NVRAM Parameters With the eeprom Command 1. To list all parameters with default and current values: # eeprom 2. To list a single parameter and its value: # eeprom boot-device boot-device=disk 3. To change the value of the default boot device: # eeprom boot-device=disk2 # eeprom boot-device boot-device=disk2