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Old 07-05-2004, 06:29 PM   #1
Registered: Sep 2002
Distribution: Mandrake 10.0 O
Posts: 48

Rep: Reputation: 15
unmounting harddrives - do I loose my data?

I have 60 GB data on a disk formatted with Ext3 filesystem.
I want to move the disk to another ide cable in order to have another one in its place.
Then it gets to be hdc I think instead of hdb.
I try to unmount it in mandrake, but it won't.
Then I try with -l option, but it gets mounted again after boot.

Am I going to remove it from fstab in order not to get it remounted automatically?
Am I right in asuming that I will be able to unmount it, move it to another cable, remount it again as hdc and then have all my data as usual?
Could I also move it to another PC that way?
Will the answer be the same with any other filesystems like FXS or Reiser?

most questions are either about mounting or about removables - fx this interesting piece:

Hope to get a little support from some yes or no's here before I throw myself into it

Old 07-05-2004, 06:37 PM   #2
Registered: Oct 2003
Location: Iowa
Distribution: LFS 5.0, building 6.3, win98se, multiboot
Posts: 288

Rep: Reputation: 30
_All_ filesystems are unmounted when you shutdown (poweroff). You have to power down to disconnect the ide cable anyway, so you really don't have a problem.

You will need to edit fstab to reflect the new position, or create a new entry when moving to a different computer.

Last edited by kevinalm; 07-05-2004 at 06:40 PM.
Old 07-05-2004, 06:47 PM   #3
Registered: Sep 2002
Distribution: Mandrake 10.0 O
Posts: 48

Original Poster
Rep: Reputation: 15
But when I power on after having removed it, it comes with an error mentioning the dev/hdb1 and asks if it is going to repair it, so thought I ought to go in and change that before powering on
Old 07-05-2004, 07:15 PM   #4
Registered: Feb 2002
Location: Grenoble
Distribution: Debian
Posts: 9,689

Rep: Reputation: 232Reputation: 232Reputation: 232
You may change it before shutdown, but it's not a very serius error. Also, all disks should unmount if:
* you're root
* no user is accessing files on this disk

You can move the disk to another cable or to another machine. If Linux system has support of the filesystem you use (probably all of them have, Ext3 or Ext2), you'd have access to your files.


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