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Recovering data from a disk image
by Mark Rogers 05 Mar '15

05 Mar '15

I have a disk image taken around ten years ago. It has a .dsk file extension, which might be a clue to what I used to take the image but more likely is something I picked because it was a disk! I'm trying to recover data from it but none of my normal tools are recognising it. Eg: $ file myfile.dsk myfile.dks: data $ fdisk -l myfile.dsk Disk myfile.dsk: 39.7 GB, 39711651840 bytes 255 heads, 63 sectors/track, 4828 cylinders, total 77561820 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk myfile.dsk doesn't contain a valid partition table Testdisk isn't giving me any clear results (it can find an ext3 partition but doesn't seem then able to extract anything from it). I'm pretty sure this was a straight image from a physical disk (it could have been a virtual disk but it's 39GB so I doubt that). It's quite possible that the default geometry settings in tesdisk etc are wrong but short of random guesses I don't know what to try. I am confident my data is there; if I view the raw data I am able to find a lot of it (mostly scripts which are therefore in plain text). Not that this is a very easy way to extract data! Suggestions as to what I should do to recover data? If it helps, the first 4096 bytes are all zero (so there's no obvious file header). Mark -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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2600 meeting at 18:00 on Friday the 6th March.
by Viperfang 03 Mar '15

03 Mar '15

Quick heads up about this months Norwich 2600 meeting, more info at http://www.norwich2600.co.uk

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Updating an old Ubuntu Server
by steve-ALUG＠hst.me.uk 27 Feb '15

27 Feb '15

Hi y'all. I have a Ubuntu 10.04.4 LTS "Lucid". It was originally a server edition. One of the reasons I updated it haven't is because I don't like the Unity GUI. It's becoming apparent that I'm going to have to update soon, but I still don't want to use Unity. What I'd like to end up with is either xfce or perhaps cinamon as the desktop. (any other suggestions?) I'm wondering if this would work: uninstall the ubuntu-desktop package remove any obvious gnome desktop packages. command line update to a more recent verision of ubuntu (the most recent LTS?) then install either a package for xfce, or perhaps xubuntu-desktop package, or perhaps a cinamon package. Do people think this would work? I'm resisting doing a fresh install from scratch then restoring data, packages etc, because I've installed a lot of stuff over the years and tweaked all sorts of things, so I think it'd take me a long while to get it right. It's my server so I don't want to be without it for a long time. Any advice please? Regards Steve

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Asterisk revisited
by Mark Rogers 25 Feb '15

25 Feb '15

A couple of months ago I got Asterisk/FreePBX set up on a virtual machine, and it's been functioning fine but I haven't really made the most of it (lack of time). I look at it now and find it has various errors (files it can't write to etc) from the original install, it seems to work OK but I don't really feel it's set up correctly and I don't know what to do about it.[*] The problem I have with Asterisk that it's way too complex and made more so by the fact that I learn nothing about it in playing with the web interfaces. I am quite happy at the command prompt or editing text files so I am considering a default "apt-get install asterisk" on an Ubuntu box and adding the trunks and extensions manually. Before I do this, is this a crazy stupid idea that's doomed to failure? I don't want anything complex (a couple of trunks, a couple of extensions which will be Android phones with a SIP or IAX client, a bit of routing between them and voicemail). Alternatively: I have been looking at the Raspberry Pi Asterisk distros, and wondering whether I should run one of those at home (where I have a 100M Virgin line) with port forwarding to allow the Android phones to reach it (might have fun with routing when they're on the WLAN at home). Give up on learning anything about Asterisk but have something which (hopefully) will just work. [*] I set up two new VMs last night and tried different fresh CentOS+Asterisk installs following instructions to the letter and still got errors left right and centre. I don't want to install from source (maintenance headache), I just want distro packages that work (otherwise why are they there?) -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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Android Jelly bean file help needed
by Bev Nicolson 21 Feb '15

21 Feb '15

I'm not sure if this is off topic (this may be partly because I don't know why I have this problem) but the difficulty is this. (If it is off topic, despite Android being related to Ubuntu, be gentle about pointing this out.) I can get my android (4.2.2) phone to connect to my pc now via usb cable **but** I can't see the dcim folder or the download folder as I used to with my old phone. Indeed, I can’t see any of the usual folders you wish to see to transfer any files from a phone to a computer, even though I have installed a couple of mtp programs. I have googled for info on this and I know it's not an uncommon problem but I've yet to find out how to fix it. Do I need an app (in which case this post is way off topic) do I need to update some bit of software or what? I've no idea. Help. Bev.

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[ALUG Announce] 3rd Monday Monthly Ipswich Social Meeting : The Mulberry Tree
by samwise 16 Feb '15

16 Feb '15

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- The monthly "Third Monday" ALUG Ipswich Social Meeting is back today, 16th February, at 20:00: The Mulberry Tree 5 Woodbridge Road IPSWICH IP4 2EA Tel: 01473 225776 Map/Directions URI: http://maps.google.co.uk/?q=IP4+2EA WWW: https://www.facebook.com/MULBERRYHOSPITALITY The Mulberry Tree, previously known as The Milestone Beer House, is a grade 2 listed building in the centre of Ipswich. It is located at the intersection between Woodbridge Road and the A1156, across the road from the old Odeon cinema and not far from the Regent Theatre. It re-opened on Thursday March 29th 2012 after a major refurbishment, under its original name of The Mulberry House and has already begun to regain a good reputation for its selection of beers and ales. It has a sizeable car park to the rear of the building. All are welcome, novices and experienced users. Feel free to ask for further information on the Main ALUG mailing list. Cheers, Peter. -- I am aiming to run the London Marathon 2015 in aid of the PSP Association. All sponsorship gratefully received. :) http://www.bagshot-row.org/marathonformum ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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What are reasonable temperatures?
by Chris Green 15 Feb '15

15 Feb '15

If one runs 'sensors' what are reasonable (i.e. reasonably safe) temperatures to see? -- Chris Green

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 12th February
by Viperfang 13 Feb '15

13 Feb '15

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 12th February at The Coach and Horses (82 Thorpe Road, Norwich, NR1 1BA). The meeting officially starts at 8pm, although some people may arrive earlier. More information on those people can be found on the list and the IRC channel. If you are unsure if you will recognise us then make yourself and your intent to attend known by either posting on list or visiting us on IRC so we can look out for you rather than hiding in the corner. Optionally you could ask at the bar if they know where the geeky computer weirdos are and they'll point you in the right direction (seriously!). Another possibility is look for heaps of electronics on a table that may possibly look like movie props that would used for detonating explosives. Feel free to bring electronics/laptops/gadgets to the meet, you will by no means be alone. Ben Bewick aka Viperfang NB: This mail is automated, please refer to the usual sources for more information. ALUG Contact Details: Website : http://www.alug.org.uk/ IRC : #alug on irc.alug.org.uk List : http://lists.alug.org.uk/mailman/listinfo Twitter : http://twitter.com/anglianlug Identica: TBA Facebook: http://www.facebook.com/group.php?gid=2381613902 ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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O.T. Problems with USB sticks
by Chris Walker 11 Feb '15

11 Feb '15

I have a few USB sticks which I use in my car to allow me to listen to things like iPlayer downloads. But only one of the three is recognised by the car now. I've reformatted them under both linux and Windows 8.1 on my wife's laptop but the problem persists. The thing that the two 'failing' discs have in common is that I have also in the past used them on my tv to record stuff. The tv reformats them to NTFS whereas the car expects them to be FAT32. Are there are utilities I can use to see what might be different between the various sticks? For info, one of the 'failing' discs is of the same type as that which *is* recognised in the car whereas the other disc is an almost new 32GB stick from Maplins. -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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Any VNC experts here - I can't get it to work at all
by Chris Green 10 Feb '15

10 Feb '15

I am trying to set up a Raspberry Pi (running Raspbian) as a remote display using VNC. I.e. the Pi will be a 'listen only' client and my laptop is the VNC server. I'm getting absolutely nowhere! :-( I have installed the TightVNC bits at each end, that's tightvncserver on my xubuntu laptop and xtightvncviewer on the Raspberry Pi. I have tried two ways to get this to work, first the conventional way:- Run 'vncserver' on the laptop, this appears to run OK and ps shows an Xtightvnc process running. Then run 'vncviewer x201' on the Pi (x201 is the name of my laptop), it just says "vncviewer: ConnectToTcpAddr: connect: connection refused. Unable to connect to VNC server" Alternatively try getting the client to 'listen' for a connection:- On the Pi run 'xvncviewer -listen -fullscreen' and 'vncconnect tvpi' on the laptop (the Raspberry Pi is called tvpi). Nothing happens at all, just silence. The two machines can definitely see each other, they're on the same LAN and I can ssh back and forth. Help!! -- Chris Green

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