Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition | |||
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Solution Type Technical Instruction Sure Solution 1005531.1 : Verify Disk is Present When Booting From Alternate Media
PreviouslyPublishedAs 207661 Description This document will help determine that status of a suspect disk. The disk might be suspected to be defective, in need of file system check (fsck), and the system may be unable to boot if the disk involved is the boot device. Utilize this method to validate the disk's status when you are able to boot off an alternate device. Steps to Follow To determine if a disk can be seen, the system must be booted by a known good operating environment. A known good environment would be achieved by being booted off either cdrom (DVD) or off a jumpstart image. To do this, perform the following: ok> boot -s cdrom or ok> boot -s net The system will boot to single user mode. At this point format will show all the drive the system can see. # format Searching for disks...done AVAILABLE DISK SELECTIONS: 0. c1t1d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424> /pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cf8ebc46,0 1. c1t2d0 <SUN72G cyl 14087 alt 2 hd 24 sec 424> /pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w210000186277b043,0 Specify disk (enter its number): 0 selecting c1t1d0 [disk formatted] Select the drive that is suspected of having a problem. In this case, c1t1d0 or 0. Then check the partition table of the drive to find the root slice. FORMAT MENU: disk - select a disk type - select (define) a disk type partition - select (define) a partition table current - describe the current disk format - format and analyze the disk repair - repair a defective sector label - write label to the disk analyze - surface analysis defect - defect list management backup - search for backup labels verify - read and display labels save - save new disk/partition definitions inquiry - show vendor, product and revision volname - set 8-character volume name !<cmd> - execute <cmd>, then return quit format> partition PARTITION MENU: 0 - change `0' partition 1 - change `1' partition 2 - change `2' partition 3 - change `3' partition 4 - change `4' partition 5 - change `5' partition 6 - change `6' partition 7 - change `7' partition select - select a predefined table modify - modify a predefined partition table name - name the current table print - display the current table label - write partition map and label to the disk !<cmd> - execute <cmd>, then return quit partition> print Current partition table (original): Total disk cylinders available: 14087 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 13673 66.35GB (13674/0/0) 139146624 1 swap wu 13674 - 14086 2.00GB (413/0/0) 4202688 2 backup wm 0 - 14086 68.35GB (14087/0/0) 143349312 3 unassigned wm 0 0 (0/0/0) 0 4 unassigned wm 0 0 (0/0/0) 0 5 unassigned wm 0 0 (0/0/0) 0 6 unassigned wm 0 0 (0/0/0) 0 7 unassigned wm 0 0 (0/0/0) 0 partition> quit Here we see the root slice is partition 0. At this point the drive should be checked and mounted. Start with checking the file system. # fsck /dev/dsk/c1t1d0s0 (this is the drive info we just got from format) Fix any errors that are reported. Run the fsck till it runs with no errors. Then it is time to mount the drive. To mount the drive: # mount /dev/rsdk/c1t0d0s0 /a Change directory onto the drive see if there is a file system there. # cd /a At this point the drive sh Sun Fire V890 Server Sun Fire V880 Server Sun Fire V490 Server Internal Comments This document contains normalized content and is managed by the the Domain Lead(s) of the respective domains. To notify content owners of a knowledge gap contained in this document, and/or prior to updating this document, please contact the domain engineers that are managing this document via the "Document Feedback" alias(es) listed below: Domain Engineer/Lead : Dencho Kojucharov Feedback alias: [email protected] normalized, boot alternate media, boot cdrom, boot net, fsck, disk, HDD, failed disk, can't boot, boot fails Previously Published As 91500 Change History Date: 2009-11-6 User Name: 103287 Action: Update Comment: Refreshed per the ESG Content Team; modified keywords and made some format changes. Date: 2007-12-20 User Name: 7058 Action: Approved Comment: Updated products - OK to republish. Version: 6 Date: 2007-12-20 User Name: 7058 Action: Accept Comment: Version: 0 Date: 2007-12-20 User Name: 77482 Action: Approved Comment: Added the Sun Fire 1280 - 6900 servers to the product list Attachments This solution has no attachment |
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