How to mount BTRFS subvolume?

Hi all, I created a BTRFS volume in RAID 5 mode (label is 'raid5') across 3 raw disks (hdb, hdc, hdd) and mounted it in /media/raid5. I then created a few subvolumes including a 'home' subvolume. Prior to this, I had the whole system mounted in / on an ext4 partition.
Question: How do I mount that raid5.home subvolume into /home, and the other subvolumes elsewhere?

If you don't know how to mount a subvolume, you probably don't follow btrfs development very closely (read: at all). That being the case, I just want to point out that btrfs is still often considered experimental, and the btrfs raid5/6 support is brand-spanking-new and considered entirely unstable. So you should not be using it if you care at all about your data. (But if you are using btrfs in the first place, you should have working, tested backups anyway, right?)
For information more directly related to your question, please see the btrfs wiki. You should really read through that if you want to use btrfs anyway. And I'm talking about https://btrfs.wiki.kernel.org not the btrfs page in the Arch wiki. This question is about how to use one of the more basic functionalities of btrfs, so it is well documented, and the information can be found all over the internets.

Similar Messages

How to setup a btrfs subvolume and boot onto it

I have backed up my previous laptops Arch install onto an external drive and now I have a new laptop with btrfs and I would like to rsync my previous Arch into a subvolume so I can boot into it separetely from the main current OS. Being new to btrfs, and not wanting to destroy my new installation, I was hoping someone could provide some generic step by step instructions on how to create a bootable btrfs subvolme (the rsync step is easy) and how to tweak grub to boot onto it?

Its pretty simple actually. You create a subvolume and you can mount the filesystem from that point. So say I were to do:
# btrfs subvolume create /rootfs
I could then mount it with:
# mount -o subvol=rootfs /dev/sda1 /mnt
Thus, to make it so that you can mount that filesystem as the rootfs, you would need pass that mount option when the machine is booting. This is typically done in the fstab. But there is a small problem there since the initramfs will first mount the partition looking for /sbin/init, using the kernel command line to figure out what to do. So you will have to modify your kernel command line in order to get it to mount the proper thing. This can be done with the rootflags= option.
Alternatively, you can specify /rootfs as the default subvolume. This will make it so that if you pass no mount options to it, it will mount at subvol=rootfs.
You should do some reading about btrfs on the btrfs wiki (the actual btrfs wiki). Some basic knowledge about how to use things and the various tools that ship with the progs would take you a long way. It might also keep you from unnecessarily doing various recovery things that might totally wreck the filesystem. Remember that btrfs is still in very active development. Make sure you have tested backups.

Trying to understand and learn how to use btrfs

I have been the past days trying to get my head around how btrfs works
I have been trying tools like mkinitcpio-btrfs (very poorly documented) and now, if i list the subvolumes i have in certain volume (/) i see i have 4 subvolumes that have been created while playing around.
If i try to delete them with "sudo btrfs subvolume delete __active", for example, I get a "ERROR: Error accessing '__active'
What am I doing wrong?
Also, I cannot get the whole idea about the difference between snapshots and subvolumes, i mean, a snapshot should be a directory that saves the changes made on the fs, s, if you want to roll back those changes, you just have to make btrfs "forget" the changes stored in that directory and move along, but I cannot take the idea of the subvolume thing.....
As btrfs is quite experimental and the wikis are not noob-proof still, I'd appreciate if someone gave me a hand trying to understand these concept...
For the moment, I'm just using it on a test computer and on a personal laptop with no fear of data loss,.
Any help is welcome
Thanks!
Last edited by jasonwryan (2013-07-19 23:13:27)

I honestly think it is probably a better idea to not use mkinitpcio-btrfs. As mentioned above, it is poorly documented, and for me it has never worked right (if at all). It is an unofficial AUR package, and unfortunately our wiki still seems to give the false impression that using this package is the way to user btrfs with Arch.
The way I have my system set up is that in subvolid=0 (the root of the btrfs filesystem) I have a rootfs subvolume and a home subvolume (there are others, but these are what primarily make up my system). So in my fstab, I basically have two nearly identical lines, but one has no subvol specified and is mounted at /, and the other has 'subvol=home' mounted at /home.
So in order to make it so that I can change the root filesystem as I please, instead of having the / fstab entry specify the subvolume, I put it in the kernel command line. That is, I have 'rootflags=subvol=rootfs' in the kernel command line. So if I want to change it, I simply change the path to one of the snapshots.
Just remember that if you are one who likes a custom kernel, it is likely that you will have to have an initamfs no matter what you compile into your kernel. For one thing, the kernel has no mechanism for scanning for multiple device btrfs filesystems. But also, I have read that the kernel itself cannot handle the rootflags kernel command line argument.
Oracle Linux does something interesting with their default setup. They are not a rolling release, so this probably wouldn't work so well in Arch Linux, but they actually install the root filesystem (I think it is actually done to subvolid=0) and then after installation of the packages, a snapshot of the root filesystem is made, and the system is setup to boot off of that snapshot. So it is almost like having an overlayfs on openwrt. There is always a copy of the original system, and and changes that are being made are being done "on top" of the original. So in the event of an emergency, yo can always get back to the original working state.
If you put your root filesystem on something other than the root of the btrfs filesystem (which you should, as it makes the whole setup much more flexible), then you should also set up a mountpoint somewhere to give administrator access to the filesystem from subvolid=0. For example, I have an autofs mountpoint at /var/lib/btrfs-root. chose that spot because /var/lib is where devtools puts the clean chroot. So it seemed as reasonable a place as any.
You should go to the btrfs wiki, and peruse through the stuff there... not our wiki, but the actual btrfs one, as our wiki is pretty sparse. There is not all that much content there (not like the Arch wiki), but it does cover the features pretty well. I mean, there is certainly quite a lot for being information on only a single filesystem, but it shouldn't take you too long to get through it. There are a few links to articles about midway down the front page. What really gave me a better grasp of getting started with btrfs were the ones titled "How I Got Started with the Btrfs Filesystem for Oracle Linux" and "How I Use the Advanced Capabilities of Btrfs".

Clarification on Btrfs Subvolumes

Howdy-ha, folks. So, I just got myself a new Western Digital Advance Format HDD for my laptop. While I first considered cloning my current drive, I decided instead to just reinstall by backing up/restoring the pacman cache, first formatting the drive as Btrfs. I've hit a snag, though, because despite reading through the Brtfs wiki FAQ, Use Cases and Getting Started entries word-for-word (twice, even), the Arch wiki entry on Btrfs and searching the forums I can't quite wrap my head around subvolumes. I understand that the general idea is to do away with multiple, partially-full partitions, but I can't figure out how subvolumes are mounted and used as an analog to partitions.
I plan to use Archboot to install, and up to this point have had separate partitions for /root and /home. In order to mimic this with Btrfs, would I simply create two subvolumes at installation time--one for root to allow for snapshots, and one for my Home folder? Would these actually be mounted in theoretically the same way as separate partitions? I like to tinker, and 'till now have just used clonezilla to back-up my /root partition if something went wrong, leaving /home untouched. Sorry, but I can't figure out how this might be done, as the wiki simply explains how to create a new subvolume in a certain location and mount it manually (since it isn't a new filesystem, it doesn't need an fstab entry); and how to delete a subvolume. It also seems that the examples used in the Btrfs wiki are for an external device, which just seems to obfuscate things. I'd really appreciate the help of someone experienced in this or a point in the right direction, though I suppose I could also just create two separate Btrfs partitions if I can't figure it out. Thanks.

So as I write this, I think I may have found a solution to the first question, and have a functional system. I used Archboot to install this setup:
$ btrfs sub li /
ID 256 top level 5 path root
ID 257 top level 5 path home
Which, when viewed from a LiveCD, looks essentially like this:
__actual root__
|__subvbolume "root"
|__subvolume "home"
Each of these is mounted via fstab in the respective part of the file system--or at least it seems so:
#/etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
devpts /dev/pts devpts defaults 0 0
shm /dev/shm tmpfs nodev,nosuid 0 0
# DEVICE DETAILS: /dev/sda1 UUID=28a77746-673e-482c-b037-3eea590c0b14 LABEL=Boot
# DEVICE DETAILS: /dev/sda2 UUID=7caf3bbf-0d2c-4961-8693-962ebc365f20 LABEL=Arch
# DEVICE DETAILS: /dev/sda2 UUID=7caf3bbf-0d2c-4961-8693-962ebc365f20 LABEL=Arch
# DEVICE DETAILS: /dev/sda3 UUID=f6e8ba7e-0cae-429d-9a2b-e4bdf5d8be7d LABEL=Swap
LABEL=Arch / btrfs defaults,subvol=root,compress 0 1
LABEL=Arch /home btrfs defaults,subvol=home,compress 0 1
LABEL=Boot /boot ext2 defaults 0 1
LABEL=Swap swap swap defaults 0 0
This results in a seemingly ordinary filesystem when I'm logged into my desktop:
├── bin
├── boot
├── dev
├── etc
├── home
├── lib
├── lib64
├── media
├── mnt
├── opt
├── proc
├── root
├── sbin
├── srv
├── sys
├── tmp
├── usr
└── var
/home
└── anoknusa
├── ABS
├── Desktop
├── Documents
├── Downloads
├── Music
├── Pictures
├── pkglist
├── Stuff
├── Torrents
└── Videos
So, at this juncture I have what appear to be two separate snapshots mounted at separate points in order to create a single filesystem, just as I would had I mounted to separate partitions, and I'm left only wondering about the second question.
I'm still not entirely clear whether this will give me the desired effect. Each subvolume rests at the same level of the fs tree; they're side-by-side, rather than having the "home" subvolume under the "root" subvolume. Again, what I'm hoping for is the ability to take snapshots of "root" and "home" separately--as one would with separate partitions--so that taking a snapshot of "root" won't end up with my entire drive under it, and I can tinker without worrying about whether or not I'll have to spend two hours restoring a snapshot every few days. I'm not sure if this would work while both snapshots are mounted, so I'm planning on testing this once my backups are done copying to my ~/ folder (I'm really no good when it comes to visualizing this sort of thing, and need to either see it in action or be told that it's gonna work by someone who's done this before). Hopefully, this works out as planned. Any more advice from anyone would be greatly appreciated; thanks again.

Using BTRFS subvolumes to host multiple linux distributions

I'm planning to use BTRFS subvolumes to have an Archlinux and an Ubuntu system booting off the same partition. The goal is to to have them both using the same disk space, mostly because I dislike having to resize partitions to make room for one or the other. Also my system has been way too stable lately and I have to break it.
Has anyone tried something like this before? Any gotchas I should be aware of? AFAIK what I'll need to do is use debootstrap to setup ubuntu in a subvolume, copy the ubuntu kernel/initrd over to my /boot, and setup grub2 to boot the ubuntu subvolume (line after root= would be ro,subvol=altroot I think)
If it works I'll be sure to post the success here.

correnos wrote:
I'm planning to use BTRFS subvolumes to have an Archlinux and an Ubuntu system booting off the same partition. The goal is to to have them both using the same disk space, mostly because I dislike having to resize partitions to make room for one or the other. Also my system has been way too stable lately and I have to break it.
Has anyone tried something like this before? Any gotchas I should be aware of? AFAIK what I'll need to do is use debootstrap to setup ubuntu in a subvolume, copy the ubuntu kernel/initrd over to my /boot, and setup grub2 to boot the ubuntu subvolume (line after root= would be ro,subvol=altroot I think)
If it works I'll be sure to post the success here.
it should be possible, though the subvol=XXX is not correct. in the arch initramfs scripts:
rootflags=subvol=XXX
is used to add mount options to the root mount; "ro" is a special case and is handled explicitly. i'm not sure how ubuntu handles this, but the kernel itself has nothing to do with it... is all initramfs, so you will have to look into that for ubuntu.
beyond that, just make sure the kernels and initramfs names do not conflict.
C Anthony

Change default btrfs subvolume - GRUB problem

grub-mkconfig creates a grub.cfg with this kernel command line:
linux /vmlinuz-linux root=UUID=88e4e9db-0d5d-4055-bb36-6c4bc3454cb3 rw rootflags=subvol=SB0 quiet video=hyperv_fb:1920x1080
my problem lies in rootflags=subvol=SB0 where is named a specific btrfs subvolume.
I would like no subvolume be specified in grub.cfg so that the default one will be mounted as root filesystem.
The reason is I have arch installed into btrfs subvols and I would like to choose which arch variant to boot simply changing default subvol.
(I've used the installation tips found at http://www.funtoo.org/BTRFS_Fun )
This is btrfs root :
~/bin > mount /dev/sda2 -o subvolid=0 /mnt
~/bin > btrfs filesys show /mnt
Label: none uuid: 88e4e9db-0d5d-4055-bb36-6c4bc3454cb3
Total devices 1 FS bytes used 3.47GiB
devid 1 size 126.81GiB used 6.04GiB path /dev/sda2
btrfs-progs v3.19.1
/etc/fstab :
~/bin > cat /etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# /dev/sda2
UUID=88e4e9db-0d5d-4055-bb36-6c4bc3454cb3 / btrfs rw,relatime,space_cache 0 0
# /dev/sda1
UUID=df2d9bbc-ab0a-42a5-96ae-7c90f0c15a0e /boot ext3 rw,relatime,data=ordered 0 2
These are the subvolumes:
~/bin > btrfs subvol list /mnt
ID 260 gen 5129 top level 5 path SB0
ID 264 gen 4975 top level 260 path SB0/var/lib/machines
ID 265 gen 5092 top level 5 path SB1
SB1 is a snapshot of SB0 and both contain an arch installation
SB1 is default one:
~/bin > btrfs subvol get-default /mnt
ID 265 gen 5092 top level 5 path SB1
but if I run grub-mkconfig it picks up SB0, in my opinion the wrong one.
Please note that SB0 is currently mounted as system root:
~/bin > findmnt -o SOURCE,TARGET,FSTYPE,FSROOT /
SOURCE TARGET FSTYPE FSROOT
/dev/sda2[/SB0] / btrfs /SB0
Is it possible to tell to grub-mkconfig to not name any specific subvol ?
If you look into: /etc/grub.d/10_linux
and search for "btrfs" it may give an hint, but I don't understand it.
many thanks in advance
Andrea
EDIT: of course, if I change kernel command line by hand (:s/SB0/SB1) it works as expected, but it's not I'm looking for, being grub.cfg an automatically generated file.
Last edited by Aklo (2015-04-28 11:11:56)

I don't use GRUB anymore, but I don't recall it requiring a specified subvolume to boot, however if you've installed to a specific subvolume (SB0 in your case), then you will need to to tell GRUB where to look more specifically than just the device and partition (/dev/sda2).
What might accomplish what you're asking for is to set up seaparate boot entries for the respective subvolumes / installation variants. Basically manually add another "menuentry" in /boot/grub/grub.cfg and change the subvolume specified:
/boot/grub/grub.cfg
menuentry "Arch Linux - SB0" {
linux /boot/vmlinuz-linux root=/dev/sda2 rootflags=subvol=SB0
menuentry "Arch Linux - SB1" {
linux /boot/vmlinuz-linux root=/dev/sda2 rootflags=subvol=SB1
You'd need to fiddle with /etc/fstab a then since I'm pretty sure something would freak out if you tried to mount two subvolumes to / at the same time (e.g., duplicate entries with different subvolumes specified). A much simpler solution would be separate root partitions with shared /boot and /home partitions. Like so (subvolumes would even be optional):
/dev/sda1 ext3 /boot
/dev/sda2 btrfs / *"menuentry" in /boot/grub/grub.cfg > title "Arch Linux - SB0"
/dev/sda3 btrfs / *"menuentry" in /boot/grub/grub.cfg > title "Arch Linux - SB1"
/dev/sda4 btrfs /home
Basically you have two separate installations, which is what it sounds like you're asking for that can be selected at boot time and share a /home partition. The fstabs in each root would only differ at the / partition entry.

How to mount iPhone 3gs on a macbook pro with maverick ?

how to mount iPhone 3gs on a macbook pro with maverick ?

There are unsupported mechanisms of doing what you want. You can search for iTunesFS.
Garage Band should allow you to send Ring Tones to the 3GS via iTunes - GarageBand '11: Send an iPhone ringtone to iTunes

How to mount a volume on an Ubuntu server in Finder?

I am a newbe in such advanced functions, but I like to find solutions and it is hard for me to give up.
I have a MacBook 13,3 and an Ubuntu server. I have managed to connect to the a USB printer connected to the server. But I have not found out how to mount the server in Finder, so that I can use an external disk connected with USB as a Time Machine disk.
Can anyone help me, and please as simple and basic as possible :-)?

so i'll admit that I haven't done this but it would seem that since Ubuntu includes Samba you could, from 'Finder' click cmd-k and type in smb://[the path to the share]
that said I found this on the web:http://www.kremalicious.com/2008/06/ubuntu-as-mac-file-server-and-time-machine-v olume/
instead of mounting the disk via Samba, it tries to use a more native approach.....that said, this definitely looks more involved.

How to mount a sharepoint server from the finder

Can anyone help me with how to mount a microsoft sharepoint services server from the finder. I need to do this because I want to use the collaboration features in Acrobat 8. In order to create a shared review I need to be able to open the document from the sharepoint site with the full version of acrobat and I cannot do that from the web browser. From a PC I would choose to add a network location and the wizard creates a network location in the explorer, then I can access the sharepoint site (across the internet) like another file folder on my local network. I cannot seem to figure out how to accomplish the same thing on the mac. When I put in the URL for the share point site in the connect dialog from the finder it opens a webdave dialog box asking for a domain name and I have no idea what that is and it tells me the password or user name is not correct. Any help would be appreciated

You might want to pose this question in the networking forum too.

How to mount USB & CDROM drives from single user mode - Solaris boot disk?

Hi All,
I need to carry out ufsrestore on a single newly replaced system disk (no redundancy / mirroring) from either USB or CDROM drives from the following steps:
( i ) GRUB => e, e, cdrom –s, Enter, b (boot from Solaris 10 x86 media).
( ii ) Choose menu 1 for Install Solaris Interactive Mode to reach single user mode.Below are the commands that I have tried in single user mode without success:
mount –r –F pcfs /dev/dsk/c1t0d0p0 /cdrom (after unmount Solaris CD)
mount: /dev/dsk/c1t0d0p0 is not a DOS filesystem.
svcadm –v enable smserver
svcadm: Pattern ‘smserver’ doesn’t match any instances
svcadm enable autofs
svcadm: Pattern ‘autofs’ doesn’t match any instances
devfsadm
devfsadm: mkdir failed for /dev 0s1ed: Read-only file system
mkdir /mnt
mkdir: Failed to make directory “/mnt”; Read-only file systemPart of the problem is due to the current READ ONLY filesystems which does not allow the creation of mount point such as /mnt.
I have been able to create both / root (/dev/dsk/c1t0d0s0) and /export/home (/dev/dsk/c1t0d0s0) filesystems with newfs that are awaiting for restore using ufsrestore.
The only option I am left with is to attach a secondary disk to install Solaris 10 on either of them before bring the system to multi-user mode so that service such as volmgt, autofs, volfs are available to access USB & CDROM drives.
Any suggestion on how to resolve this issue?
Many thanks,
Jack

Hi JKGN,
Is the directory a located under the root filesystem. ie /a? Are there any other mount point for say USB drive as well? I am not in a position to try it out right now but will get back
to you soon on whether /a exist or not.
Btw, the last thing I managed to do on this system at the time was added a secondary 1TB internal disk with the intention to restore both / and /export/home data onto this disk while
making use of all the disk device management services such as the following services only available in a fully installed Solaris system (both single & multi-user modes) installed on the
primary disk:
# svcs smserver
STATE          STIME    FMRI
online         Jun_08   svc:/network/rpc/smserver:default
# svcs autofs
STATE          STIME    FMRI
online         Jun_08   svc:/system/filesystem/autofs:default
# devfsadm
# iostat -En
c1t0d0           Soft Errors: 0 Hard Errors: 0 Transport Errors: 0
Vendor: ATA      Product: SAMSUNG HD321KJ Revision: 0-11 Serial No:
Size: 320.07GB <320072932864 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 41 Predictive Failure Analysis: 0
c0t0d0           Soft Errors: 0 Hard Errors: 5 Transport Errors: 0
Vendor: PHILIPS Product: DVD+-RW DVD8801 Revision: AD21 Serial
Size: 17.54GB <17538875392 bytes>
Media Error: 0 Device Not Ready: 5 No Device: 0 Recoverable: 0
Illegal Request: 10 Predictive Failure Analysis: 0
c2t0d0           Soft Errors: 0 Hard Errors: 0 Transport Errors: 0
Vendor: JetFlash Product: Transcend 16GB   Revision: 1100 Serial No:
Size: 0.00GB <0 bytes>
Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
Illegal Request: 7 Predictive Failure Analysis: 0
# rmformat
Looking for devices...
     1. Volmgt Node: /vol/dev/aliases/cdrom0
        Logical Node: /dev/rdsk/c0t0d0s2
        Physical Node: /pci@0,0/pci-ide@1f,1/ide@0/sd@0,0
        Connected Device: PHILIPS DVD+-RW DVD8801 AD21
        Device Type: DVD Reader/WriterHowever, I was disappointed that "iostat -En" has not found the secondary disk (1 TB) even though it was available earlier, for Solaris installation as the only disk on the same system.
As a result, I am left with no option but the need to rebuild this system with only a single primary disk while in single user mode. However, the single user mode that I am in is the
one from Solaris installation disk with restrictive (_cannot create folder for mount point or running disk management utilities_) capability such as those services just covered, compared to one from a completed Solaris installation system with full access to all filesystems and utilities / commands in general.
I would very much value your assistance on how to mount both CD & USB in this restrictive limited Read Only OS (assume that it is running from memory) in order to get complete access to
the blank primary disk so that full restore with ufsrestore could take place.
Thanks in advance,
Jack
Edited by: 797805 on 9/06/2012 04:15

How to mount USB Flash Drive

Hello again Arch-Linux users,
I always search google very hard and for months (off and on) I search for how to mount a USB Flash Drive. Nothing ever work so I give up than try again months latter. I don't want to give up anymore and that is why I join this forum.
Here are some of the code I found on the net. Some of these commands will only re-mount the entire Arch-Linux running system in /mnt/usbstick.
sudo mount -o rw,noauto,async,user,umask=1000 /dev/sda1 /mnt/usbstick
... don't work it only re-mount the entire system
/dev/sda15 /mnt/usbstick vfat user,noauto,unhide 0 0
... don't work... I found nothing inside /mnt/usbstick
mount -t vfat -o rw,nosuid,nodev,quiet,shortname=mixed,uid=1001,gid=100,umask=077,iocharset=utf8 /dev/sda1 /mnt/usbstick
... don't work... here is the error i get:
mount: /dev/sda1 already mounted or /mnt/usbstick busy
mount: according to mtab, /dev/sda1 is mounted on /
It strange that most USB mount commands use the operating system partition itself- example: /dev/sda1 as the device for USB device, while others use /dev/cdrom for cd - /dev/dvd for dvd and /dev/fd0 for floppy.
Could someone post the code that will easily mount a usb device under Arch_Linux.
I'm using Arch-Linux core-64 (08-2009)
Thanks in advance
Last edited by sharris (2010-06-17 21:58:43)

Thanks fsckd,
I needed a rapid reply because I been wasting too much time not getting anything done because I needed to get pass this flash-drive thing. I can now have a secure back-up in my pocket on USB to go. Arch-Linux does it better for what I seen while just dd'ing on disk.
...lsusb
Found it
http://gd.tuwien.ac.at/linuxcommand.org … susb8.html
Thanks demian,
sdb is the location for my single hard-drive machine. I saw it before in my list above but I changed it to sda1 because I knew no better. I had no clue it represent a 2nd hard-drive for LINUX if one is not already present.
This did it for me
Thanks again

How to mount external drives

Being new to iMac and connecting four external drives I need to know how to mount and dismount them

noondaywitch
Thanks for your help and I've followed your reply and yes I can see how to mount and eject drives.
Probably it would have helped if I had told you that my drives are all USB.
All connected to a small four way hub which is then connected to one USB socket in back of computer.
One - I use as a music drive and is a 160 gb iomega
Two - is a partitioned drive for Photoshop use 340 gb WD
Three - is a drive which has all my ex-Windows computer files and is one TB WD
Four - is a Video and Film drive of one TB WD
Five - is my dedicated auto backup drive which is of one TB WD and is connected directly to a USB socket of computer.
I normally set my computer to sleep until the next time I'm using it, then when I do go to use it, I get the warning message regarding drive was not ejected. Didn't have problems like this on PC so I became worried that in time I'm going to loose files and or the complete drive. Which one is giving me this message is also a bit of trial and error problem. Like suck it and see.....lol.
Anything else you can help me with this query would be most helpful and appreciated. Like do I have to eject all drives before leaving computer and then mount all the drives again for next session.
Regards
John

How to mounted oracle database automatically in oracle version 8.1.7?

i want to know,how to mounted oracle database automatically in oracle version 8.1.7?

Does this mean you are not using the WIndows operating system, or you doi not want to do this 'manually' using some point and click method?
If this means, "do it automatically for reboots" and you are using the Windows OS, you need to set up a service and set it to automatic at reboot. Or, again in a Windows environment but at commnand line, use "net start {service name}" - as described in the manual.

How to mount network share on lion permanently

I want to know how to mount a network share from my NAS on mountian lion.
I have seen and tried the suggestions about using command+k or the "go connect to server" and mounting that way so the password for the share is put into the keychain, then dragging the now mounted share to the system preferences user login items.
However this isn't satisfactory. It causes windows to pop up for each share that I have when logging in.
What I Want is for the share to appear as a mounted hard drive in the left navigation column of the finder window. I'd also like to be able to make a shortcut to the share on my desktop (or put it in my dock bar). If it shows up under devices that is perfection okay too, just so it's there somewhere logical.
The pop up windows simply clutter up the desktop, and if they are closed, then the share is closed too, and then there is a manual process of having to use the very tedious command+k or go connect to server method to connect again.
I need them to be able to click and open the share. I don't need them wasting time putting in share paswords and the link over and over.. the share should just be there for them as they work through the day. And if they close the folder/window, then it should be easy to get back to it.
This is possible on windows and I want these mounts to work the same way.
note: my NAS uses smb

That should work. You could try deleting the passwords in Keychain associated with it and try it again.
Another route: Create Applescript:
Select the network drive and get info on it. Copy the server address. Open up Applescript Editor in the Utilities folder and create a new script. Type in mount volume, add space, "paste server address within quotations", and save as application to your documents. Run it from within applescript editor to verify it works. When it asks for a passwork, save it in Keychain.
Under system preferences/accounts/login items, click the + sign to add and select the saved application.

Any ideas for how to mount my iPhone to my guitar (as in the opening sequence in the ad)?

Any ideas for how to mount my iPhone to my guitar (as in the opening sequence in the ad)?
Thanks for your thoughts- I'm looking for something non-damaging to the guitar but secure so I don't drop the phone.
Frank

Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

How to mount BTRFS subvolume?

Similar Messages

Maybe you are looking for