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clone disk
Post 302102616 by stamperr on Thursday 11th of January 2007 03:47:13 PM
01-11-2007
clone disk
Disk cloning
I had an external SCSI master disk that I used to clone to an identical external SCSI disk because the other SCSI disk would become corrupted. My original Master became corrupted so I used one of the other to good disk to copy back to the master. Unfortunately the new master needs to be able to boot but I don't know how to make the new master a bootable disk. I do not know anything about Unix commands and have been following a set of instructions that someone made 6 years ago.
I took a known good disk when I got to step 12 I reversed the 6 letter ID names and followed the rest of the instructions. I started the instructions over again and when I get to step 11 and try to log in as root is says that is a non bootable disk.
I am adding the instructions so someone with knowledge about UNIX might be able to make sense of this.
1. Power down the workstation and the external load disk.
2. Replace the external load disk with this disk (clone).
3. Power up this disk (clone).
4. Power up the workstation.
5. When you see the display and the message “Initializing memory” press<STOP A>.
6. At the OK prompt type: setenv use-nvramrc? True
7. At the OK prompt type: show-disks
8. Select drive a by pressing the A key.
9. At the OK prompt type: nvalias clone <CTRL Y>@1,0) (press ctrl y followed by @ followed by 1 followed by comma followed by zero)
10. At the OK prompt type: Boot clone (machine will boot of the clone disk)
11. Log in as root. (Type in Password)
12. In a terminal window type: ./copydisk donotpart c1t1d0 c0t0d0
13. When asked of you would like to modify /etc/vfstab on the target disk? Type Y <return>
14. When asked to enter the new 6 letter disk id for thee target- type c0t0d0 <return>
15. At the # prompt type init 0
16. When the OK prompt appears power down the workstation and the external disk (clone).
17. Replace the external disk (clone) with the external load disk.
18. Power up the external load disk.
19. Power up the workstation.
20. Log in.
I had an external SCSI master disk that I used to clone to an identical external SCSI disk because the other SCSI disk would become corrupted. My original Master became corrupted so I used one of the other to good disk to copy back to the master. Unfortunately the new master needs to be able to boot but I don't know how to make the new master a bootable disk. I do not know anything about Unix commands and have been following a set of instructions that someone made 6 years ago.
I took a known good disk when I got to step 12 I reversed the 6 letter ID names and followed the rest of the instructions. I started the instructions over again and when I get to step 11 and try to log in as root is says that is a non bootable disk.
I am adding the instructions so someone with knowledge about UNIX might be able to make sense of this.
1. Power down the workstation and the external load disk.
2. Replace the external load disk with this disk (clone).
3. Power up this disk (clone).
4. Power up the workstation.
5. When you see the display and the message “Initializing memory” press<STOP A>.
6. At the OK prompt type: setenv use-nvramrc? True
7. At the OK prompt type: show-disks
8. Select drive a by pressing the A key.
9. At the OK prompt type: nvalias clone <CTRL Y>@1,0) (press ctrl y followed by @ followed by 1 followed by comma followed by zero)
10. At the OK prompt type: Boot clone (machine will boot of the clone disk)
11. Log in as root. (Type in Password)
12. In a terminal window type: ./copydisk donotpart c1t1d0 c0t0d0
13. When asked of you would like to modify /etc/vfstab on the target disk? Type Y <return>
14. When asked to enter the new 6 letter disk id for thee target- type c0t0d0 <return>
15. At the # prompt type init 0
16. When the OK prompt appears power down the workstation and the external disk (clone).
17. Replace the external disk (clone) with the external load disk.
18. Power up the external load disk.
19. Power up the workstation.
20. Log in.
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LEARN ABOUT PLAN9
wren
WREN(3) Library Functions Manual WREN(3) NAME
wren, ata - hard disk interface SYNOPSIS
bind #H[drive] /dev bind #w[target[.lun]] /dev /dev/hd0disk /dev/hd0partition /dev/sd0disk /dev/sd0partition ... DESCRIPTION
The hard disk interfaces (wren, #w, is a SCSI disk; ata, #H, is an IDE or ATA disk) serve a one-level directory giving access to the hard disk partitions. The parameter to attach defines the numerical SCSI target and logical unit number or the IDE drive number to access. Both default to zero. Each partition name is prefixed by hd and the numeric drive identifier. The partition always exists and covers the entire disk. The size of each partition as reported by stat(2) is the number of bytes in the partition, so the size of is the size of the entire disk. The partition also always exists; it is the last block on the disk for SCSI, second to last for IDE. If it contains valid partition data, those partitions will be visible as well. Every time the device is bound, the partitions are updated to reflect any changes in the parti- tion file. The format of the partition file is the string plan9 partitions on a line, followed by partition specifications, one per line, consisting of a name and textual strings for the block start and limit for each partition on the disk. The program prep(8) writes the partition table for the disk; its use is preferred to writing it by hand. SEE ALSO
prep(8), scsi(3) SOURCE
/sys/src/9/port/devwren.c /sys/src/9/pc/devata.c WREN(3)