1
vote
2answers
40 views

Why do my devices appear to have symlinks , which are empty?

I am finding that I can't mount a device, sdb. However, I don't see it in mounts: [root@idh1 rhs-hadoop-install-0_61]# mount | grep --color dev /dev/mapper/VolGroup-lv_root on / type ext4 (rw) ...
0
votes
1answer
21 views

How can I create a RAW device ON TOP of an LVM block?

I have disks which are LVM devices. Is there a way that i can create a raw writeable disk on top of them? By raw, I mean, a file which is seen as a true block device by the kernel.
0
votes
0answers
19 views

When nodes are created in linux at the time of system bootup?

I am working on Linux kernel 3.4.56, and I am trying to add a system upgrade feature in my system using external USB device. So in my implementation is check that, if /sys/block/sd*(a/b) node is ...
1
vote
1answer
134 views

Does `ro` matter in CD-ROM mounts?

As far I know, /dev/cdrom usually provides a read-only device. However, some sources suggest to add ro in the /etc/fstab and others not. Is there a difference between /dev/cdrom /mnt/cdrom auto ...
0
votes
2answers
48 views

Is it possible to set the device containing a linux root filesystem to always be detected as a specific block device?

I have a bootable linux thumb drive meant to deploy linux OS images and I've been having problems with the thumb drive occasionally changing the /dev/sd device it mounts as, wreaking havoc with the ...
0
votes
1answer
114 views

How to determine the used size of device associated's buffer

when mounting a device without the "sync" option, e. g. by invoking the following: mount -o async /dev/sdc1 /mnt a buffer is associated with a device to optimize (speed) read/write operations. Is ...
2
votes
2answers
453 views

How to find a certain device and mount it correctly

I have booted with the System Rescue CD and I have figured out how to mount a windows partition by using for example mount or ntfs-3g. But how do I know what device is what drive? If I have some ...
8
votes
2answers
3k views

fdisk -l shows a partition is not in /dev directory

I am having troubles on mounting my ntfs hard drive on linux. I am running ophcrack live CD. fdisk shows me the hard drive I have installed on my computer fdisk -l Disk /dev/hdc: 30.0 GB, ...
0
votes
1answer
493 views

How can I tell what block size a mounted device uses, which has no mounted volumes

This seems absurdly easy, and I have the idea I used to know how to find out, but... On Mac Os 10.4, I want to do a raw copy from/two two devices using dd if=*inputdev* of=*outputdev* ibs=?? obs=??. ...
1
vote
2answers
587 views

Linux fstab mounting

I'm trying to get fstab to auto-mount a removable device when its plugged in? Is this possible and if not what is the easiest way to auto-mount a removable device?