Can't mount sdb1
I have FC6 on an old box w. 2 80Gb SATA hard drives.
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Thanks |
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'mount -t ext2 /dev/sdb1 /mnt/share' or 'mount -t ext3 /dev/sdb1 /mnt/share' |
err.. sdb1 is a LVM file system and you can't mount directly, you need to mount the logical partition. Please read more in LVM.
God luck. |
Wildar.. I will try it later when I get home.
kstan...I did read on LVM. Thats why I posted the output of pvdisplay, which says that sdb is not in the volume. I understand the fdisk says it is. so this is why I am confused. The LVM man says to list all drives in the LVM use the pvdisplay command, and sdb doesn't appear, only sda. Am I interpreting this incorrectly? Thanks |
There seems to be some hardware issues here. I can not mount this drive at all. mount says that it is not a valid block device, no matter what file system I try. I know it is vfat32, I can format it to my hearts content in gparted with no problem. I can't do anything with it as a logical volume, it doesnt show up in pvdisplay and if I try the gui LV management I cant perform any operations on it. sdb1 shows up as an unitialized entry, and if I attempt to initialize it I get the following
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Any other ideas?? Thanks again |
fdisk has confirmed that the sdb1 partition type "is" indeed LVM which cannot be mounted by the ordinary "mount" command.
I don't think OP's opinion is better than that by the fdisk program. If it shows up nothing may be it is empty and what is the point of mounting it anyway? |
Whats the point of mounting an empty hard drive-? Well my though was to put stuff on it. Call me crazy, but I was gonna give it a whirl. If this is part of the LVM then why can I not find it or perform logical volume modifications on it?
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When a hard drive is empty it can have a partition but not yet formatted. This is the most common reason for a Linux to refuse to mount it.
If a partition has no filing system inside Linux can't mount it because Linux needs to know what tool is needed to read it. Could it be a fat16 Dos partition, or a fat32, or an Ext3, or reiserfs or xfs system....... Different filing systems have different ways of storages and tracking systems. You couldn't possibly do it if you were Mr. Linux yourself. If a smart arxe comes along and writes files on it what filing system would you choose for an unformatted partition? I don't use LVM as could not advise on it but it does require a different way of mounting it. Linux in fact needs to load a driver just to be able to see it. I see only hassle and no benefit from LVM so I stay away. |
Ok that makes sense, but when I format in gparted as a vfat and I get no errors, what exactly have I done? I dont see any advantage in LVM for me, but I dont really want to reinstall to get rid of it. I suppose I will research how to not use it in FC7 and hopefully by then I will figure it out and upgrade when it comes out. What do you suggest is the best way to just add a drive to a system then?
Thanks for you insight and patience |
It is easier than you think if you want get rid of the LVM.
In FC6 invoke Grub by typing Code:
sudo grub You can then investigate the partitions of your two Sata by commands Code:
geometry (hd0) (hd1) is your sdb with only one partition Type ID 0x8e indicating it is a LVM which you want to get rid of. You can do so by altering the partition ID to Type 0xc for fat32, just like that by command Code:
parttype (hd1,0) 0xc On a reboot to FC6 you can format /dev/sdb1 with fat32 filing system with command Code:
mkdosfs -F32 /dev/sdb1 |
I am sure it is just me...
I follow your directions which seemed nearly idiot proof- alas I found a way! not sure what I am doing wrong but i confirm the change to the map with the geometry command, all is well. And then ... Quote:
Again I need a little more of your patience and I can be back to breaking things :) Thanks |
Did you rebooted after altering the geometry of a fat partition?
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Yes I did.
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Paste terminal output of "fdisk -l" here.
It is possible FC6 is protecting the LVM against inadvertent damage. In such a case you can boot to a Live CD, use the terminal program cfdisk or fdisk to delete sdb1, create at the same place a partition, select Type c and write the partition table. Since you have two LVM locations you could also have used both disks sda and sdb to form one LVM. In such a case you may need to break up the LVM to free sdb1. Only you know what has been arranged in your PC. |
Well here you go..
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