UNIX for Dummies Questions & Answers

hi friends,

one of my clnts wants his Hard drive to be ugrded . He is currently using SCO unix 5.04 on a 4.3 Gig SCSI drive. He wants me to upgrd it to 18 Gigs . All he wants is that the data / programs / userfiles shall be intact. he has 3 user slices /user1, /user2 , /user3 presently and wants the same in the new one.

i want to kno how to copy back the entire contents of the old /user1 , and so on to the new one . i m sure just cp will not be able to copy the file permissions and user permissions also. also i want to kno if i can just copy the /etc/passwd and /etc/shadow file from the old to the new one so that the usernames and passwords dont have to be created in the new one .

any help or pointers will be highly appreciated

I'm assumong you are referring to SCO OpenServer.
Check out...
http://osr5doc.ca.caldera.com:457/HA.../CONTENTS.html

...in specific, chapter 18 on adding disks.

You may also want to look at...
http://www.caldera.com/support/docs/...RN_adding_disk

the pointers u hav suggested just teach us how to add an additional harddisk. but what i want to do is replace the old one with a higher capacity one and copy back the old data without disturbing the file permissions and/or rights set.


can any 1 help me in this regard.

OK, I shall attempt to help, maybe someone can browse this
and suggest any corrections, if necessary.

I am not a SCO person, but I can try giving you some idea(s).

1. Connect the new drive and create all the necessary slices (I am assuming that each slice is a seperate partition) on it. You will need to make your new drive bootable as well. Of course the scsi id of the new drive has to be different than the old drive unless you are using SCAM (auto SCSI numbering).

2. Mount the n new slices as /new, /user1new, /user2new /user3new

i.e. mount /dev/sd02a /new
mount /dev/sd02b /user1new
...
...


3. From every old slice , copy the contents to the corresponding new slice:

cd /user1
find / | cpio -dumpv /user1new

repeat for 1 ... n

4. cd to your new root partition, say /new (meaning anything that was in / on the old drive is in /new slice).

5. Adjust any device/link reference(s) for your old drive with the new drive

6. Adjust/update your /fstab to mount /disk1,2,3 with new device name(s).

7. Shutdown & disconnect old drive, make sure that the scsi id on new drive is adjusted or the scsi bios knows how to reboot from the new drive. Pray hard, reboot to ensure that the new slices mount appropriately.

8. Good Luck!