Backup your original Hard Drive

From AwkwardTV
Revision as of 18:54, 15 September 2007 by AjpKxs (talk | contribs)
Jump to: navigation, search
shadow the rasmus amd athlon64 3400 aki mahjong solitaire da quando sei mia bravo club it sbloccare e616v obelia motorola usb driver geografia dell indonesia salta salta lavatrici 3 5kg batteria canon bp511 macchina pane www bet com amplificate diffusori casse acustiche residence le riviere palmare tom tom 5 polar m71ti afrika korps vs desert rats hard disk esterno 800 tutto sul computer andrei chikatilo giorgio bocca que tontos so dove vado stefani stefano srl usb cavo lg lobi frontale 40cm colombia com caccia e armi phone ringtone meana sardo venere in visone piedi sudici mizuno scarpe calcio deborha caprioglio certosa di padula dissipatore intel bidirezionale e adesso la pubblicita camera commercio industria artigianato e agricoltu traduzioni geroglifici i film erotici gratuiti del web sito incontri single jordan katie price fire pop foto bellissime donne adattatore antenna barebone pundit ceaser iii ibox tim it tubo catodico risorse naturali hoover lava wifi casse www comune torino it massachusetts hotel rsmmc dv 512 mb nokia gauntlet mmc mp3 take me as i am wyclef egizio cristina nurse torte di patate fiere friuli granulati mercedes 140 navman europe lg home fiat punto 55 1998 profumi wish gosex massaggi orientali torino corso cucina lazio sotto il sole di roma repiola the reason testo canzone gianna serra le bureau Zoophilia movie Porno preview Daemon tool v4 Www filmporno it Video gratis xxx Dragonballx gratis Video ciccione porno Attrice hard Emma watson nude fakes Alba parietti nuda Www donnemature it Ramas de la biologia Naruto xxx immagini Xnxx movies Ispettorato del lavoro milano Simpson porno Lolitas young cuties little bbs Video scopate Trucchi travian 3 Terri summers fuck Melita lucignolo calendario Www ragazze da coccolare com Video arrapanti Culi di donne Sextv tv1 Taylor bow Grassone sex Valeria visconti diva futura Vip senza mutande Pompei sauna Lettera dimissioni amministratore Piscina giardino Taylor bow Arcaton com Stradario michelin Scritte glitter Puntochat it Esibizioniste porno Webcam sexy free Eva tremila Lupin porno Video donne violentate Dizionario italiano spagnolo Youporno tube Lolita bbs Naruto hentai x Ls magazine lolitas Sesso it Dragonball xxx fumetti Cartina geografica italia Donne nere foto The simpson porno Belle fighe sudamericane Video amatoriale porno gratis sicuri Myfirstsexteacher com Fumetti dragon ball xxx gratis Manga hentay Scritte glitter Racconti incestuosi Disneychannel com Friendster layouts com Doctoradventures Anziane sesso Annunci69 Trova video figa gratis Scopata con cavallo Asian shemale gratis Spiegazione gioco prestigio Incesto madre Dragonball porn Fotostorie di incesto Kamehasutra in italiano Silvia saint video gratis Videosexy Hentai flash game Roberta missoni rapidshare Scritte di benvenuto glitter Kobe tai Www simonerossi it coloring Troie bagnate

<Google>WIKI</Google>

The Phoem method may be superceded by Engadget's. Please consider doing a complete ~40GB backup of your original drive.

Phoem's Fast DD Method (OS X)

This will allow you to make copies of your AppleTV system partitions in case you need to restore them to a virgin state. This has only been tested on MacOS X.

NOTE: These instructions assume /dev/disk2 is your AppleTV drive.

First we will make copies of the original AppleTV partitions that we care about (everything except for the media partition, basically).

Lets copy the partitions onto your local drive:

dd if=/dev/disk2 of=Partition.img bs=1024k count=100
dd if=/dev/disk2s1 of=EFI.img
dd if=/dev/disk2s2 of=OS.img
dd if=/dev/disk2s3 of=OSBoot.img

Now lets put it back in place onto the new drive:

dd if=Partition.img of=/dev/disk2 bs=1024k count=100
dd if=EFI.img of=/dev/disk2s1
dd if=OS.img of=/dev/disk2s2
dd if=OSBoot.img of=/dev/disk2s3

Now use iPartition demo to find out the size if you were to grow the partition completely; using up the free space.
Execute: gpt recover /dev/disk2
Execute: gpt remove -i 4 /dev/disk2
Unmount the drives.
Execute: gpt add -s 309849759 -i 4 /dev/disk2
NOTE: 309849759 represents the # of blocks iPartition mentioned.
Finally, open diskutility and format just the media partition. (erase)

Linux Method

For a full disk image execute (approx 40GB space required):

dd if=/dev/sdc of=appletv-full-disk.bin bs=1024

For a compressed disk image execute (approx 2.5GB, roughly 1-3hrs):

dd if=/dev/sdc bs=1024 | gzip > appletv-full-disk.bin.gz

For partition-specific backups execute:

dd if=/dev/sdc0 of=Partition.img bs=1024 count=100
dd if=/dev/sdc1 of=EFI.img
dd if=/dev/sdc2 of=OS.img
dd if=/dev/sdc3 of=OSBoot.img
dd if=/dev/sdc4 of=Media.img

To perform a full drive restore (takes a long time, 18 hours in one case, but a sure thing from a whole disk), execute:

dd if=appletv-full-disk.bin of=/dev/sdc bs=1024

Note: sdc represents your AppleTV 2.5" notebook drive. It could be sda/sdb/sdc (USB) or hda/hdb/hdc (IDE) depending on your system, and how you connect the drive to the host machine. The number that sometimes but not always follows it is the partition id. In Linux, not specifying the partition id treats the whole drive as one big partition. This can be useful for backups and restores.

The reasoning behind creating a full backup image should be clear by looking at the partition table with fdisk. The minor partitions are wrapped in one large meta-partition!

Disk /dev/hdc: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device    | Boot | Start | End   | Blocks   | Id | System
/dev/hdc1          1       4864    39070076   ee   EFI GPT


Update: Linux can see the partitions and can mount them (although journaling is not supported), if the following options are compiled in the kernel. (not sure if you need all of them)

Filesystems -> Partition Types -> Advanced partition selection                    (CONFIG_PARTITION_ADVANCED=y)
Filesystems -> Partition Types -> Macintosh partition map support                 (CONFIG_MAC_PARTITION=y)
Filesystems -> Partition Types -> EFI GUID Partition support                      (CONFIG_EFI_PARTITION=y)
Filesystems -> Miscanelous filesystems ->Apple Extended HFS file system support   (CONFIG_HFSPLUS_FS=m or y)

Partitions can be mounted forcefully. Although this is not recommended, it may be necessary to alter execution permissions on files such as /usr/sbin/sshd before it will auto-launch. Forceful mounts can be done with:

mount -t hfsplus -o force /dev/sdc3 /mnt/appletv

Linux Method With Compression

To back up the whole raw disk image takes 40 GB of drive space on the destination drive. Most of the source disk is empty however.
This allows for the creation of a smaller image by piping dd to gzip while imaging the drive.

dd if=/dev/sdc bs=1024 | gzip > wholedrive.img.gz

39070080 0 records in
39070080 0 records out
40007761920 bytes (40 GB) copied, 3436.62 seconds, 11.6 MB/s

Note: This will take about an hour depending on your machine!

In the end, this results in a file that's about 2.4GB on the destination disk. Not a bad compression ratio!

Update: dd if=/dev/sdc bs=1024 | bzip2 -9 > wholedrive.img.bz2 Will take approx twice as long, and result in a 2.2GB file. FYI.

Update 2: there is a huge gain in compressibility if you zero the empty space on the partitions before doing backup. I did the folowing using a macintosh on Media and OSBoot partitions and the resulting image is only 528 MB! The reason is that the zeros are more compressible than the garbage, which was there before.

dd if=/dev/zero of=/Volumes/Media/big_file_full_of_zeros bs=1024
rm /Volumes/Media/big_file_full_of_zeros
sudo umount /Volumes/Media/

Maybe the same effect can be obtained using macintosh Disk Utility -> Erase -> Erase Free Space ... -> Zero Out Deleted Files