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Old 05-14-2010, 07:44 AM
Default LVM Logical Volumes viewing partitions, mounting, creating, sda moved to sdb

KU 10.4. Desktop with2 hdisks. 1.5TB has 9.04, was hda/sda. Now install a 2TB as sda, move old disk to sdb.

Alternate install 10.4 on the 2TB sda. Grub finds the 9.04 install on sdb, & installs fine on sda.

Both installs have a /home partition in their sda4 logical partition, probably sda5 on each drive when they were installed.

10.4 boots fine on the 2tb, but 9.4 refuses to boot off now sdb.

Less important question: Suggestions for getting the 9.4 to boot when that drive has been moved from sda to sdb (data connector on the motherboard). It's probably a mount issue?

== How does one see the logical partitions??

fdisk -l, & parted -l, & gparted, I have used - a few days ago, so I don't recall the specifics right now.

IIRC, on 9.04 as sda, gparted would see the LVs, & show some info about them.

When I boot 10.4, IIRC gparted doesn't pull up any info about the LV's, even on the sda drive with the 10.4 os it booted from.

IIRC, none of those programs show info about the LV's on sdb, which has the 9.4 install on it.

So, is LVM properly supported in some partition creation/diagnostic sw??? ex: fdisk, parted, gparted? Is there some other program that will at least see, & perhaps show some info about those partitions?

How about creating more LVs in the free space on the drives? What sw can do that from the running 10.4 system? (ie, I don't want to have to use the alternate installer disk to do partitioning, now that the os is installed. I'm hoping that is possible - hasn't LVM been out for quite a while? Why don't fdisk & parted support it properly yet? BTW, what orgs create & support the LVM sw? GNU? Linux Kernel?? Other?

Most Important: How can I get 10.4 to be able to see & mount the 9.4 /home partition which is now on (probably) sdb5? What info will be needed by the mount command? UDEV #? What sw (parted, fdisk,???) will show the info necessary to use in the mount commnad??

Thanks for all thoughts/suggestions.

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