>
>> So what happens if I pull out a drive from my SPARC based
>> solaris 8 system and plug it into a intel box...
>
>
> Solaris-SPARC uses a different disk TOC than Solaris-x86.
>
> X86 disks use a disk label that is derived from the PC world,
> with Master Boot Records, fdisk, partitions and the like; within
> one of these partitions, Solaris-X86 writes out a Solaris-SPARC-like
> disk label that spells out the slice info that the rest of the
> Solaris tools use.
A far more curious and useful bit is the result we get from fmthard
in Solaris x86. While both Sparc and x86 implementations of Solaris
have both fmthard and prtvtoc you will note that only the x86 side of
life allows for 16 slices while Sparc is limited to 8.
thus :
# format -e
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <DEFAULT cyl 1103 alt 2 hd 255 sec 63>
/[EMAIL PROTECTED],0/pci9004,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
1. c3t0d0 <SEAGATE-ST39102LW-8320 cyl 6921 alt 2 hd 12 sec 214>
/[EMAIL PROTECTED],0/pci1011,[EMAIL PROTECTED]/pci1000,[EMAIL
PROTECTED]/[EMAIL PROTECTED],0
2. c4t1d0 <DEFAULT cyl 4424 alt 2 hd 255 sec 63>
/[EMAIL PROTECTED],0/pci9004,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
Specify disk (enter its number):
Specify disk (enter its number): 2
selecting c4t1d0
[disk formatted]
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
fdisk - run the fdisk program
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
scsi - independent SCSI mode selects
cache - enable, disable or query SCSI disk cache
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> inq
Vendor: SEAGATE
Product: ST336704LSUN36G
Revision: 032C
format>
format> pa
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
9 - change `9' 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> pr
Current partition table (original):
Total disk cylinders available: 4424 + 2 (reserved cylinders)
Part Tag Flag Cylinders Size Blocks
0 unassigned wm 1 - 4423 33.88GB (4423/0/0) 71055495
1 unassigned wu 0 0 (0/0/0) 0
2 backup wu 0 - 4423 33.89GB (4424/0/0) 71071560
3 unassigned wu 0 0 (0/0/0) 0
4 unassigned wu 0 0 (0/0/0) 0
5 unassigned wu 0 0 (0/0/0) 0
6 unassigned wu 0 0 (0/0/0) 0
7 unassigned wu 0 0 (0/0/0) 0
8 boot wu 0 - 0 7.84MB (1/0/0) 16065
9 unassigned wu 0 0 (0/0/0) 0
partition>
and prtvtoc reveals what format does not :
# prtvtoc /dev/rdsk/c4t1d0s0
* /dev/rdsk/c4t1d0s0 partition map
*
* Dimensions:
* 512 bytes/sector
* 63 sectors/track
* 255 tracks/cylinder
* 16065 sectors/cylinder
* 4426 cylinders
* 4424 accessible cylinders
*
* Flags:
* 1: unmountable
* 10: read-only
*
* First Sector Last
* Partition Tag Flags Sector Count Sector Mount Directory
0 0 00 16065 71055495 71071559
2 5 01 0 71071560 71071559
8 1 01 0 16065 16064
10 0 00 16065 1606500 1622564
13 0 00 1622565 6426000 8048564
#
there are slices 10 and 13 there.
In fact, you can go up to number 15 for a total of 16 slices.
Perfectly valid and with the newer 500GB disks they may be useful.
Dennis
_______________________________________________
opensolaris-discuss mailing list
[email protected]
