iMac HD corrupted

TestDisk benutzen um das Dateisystem zu reparieren
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stepstep
Posts: 2
Joined: 20 Feb 2013, 20:59

iMac HD corrupted

#1 Post by stepstep » 20 Feb 2013, 21:11

Hi,
my iMac (white 20"), OS X 10.6.8 (I guess) did not start anymore from HD. A start from another CopyCloned ExtHD was possible, meanwhile even this takes hours...
But starting from an Ubuntu CD-ROM (by MacLife, 2009, for Intel-Macs with HFS+ disks) works out when pressing Command key upon start.
A few months ago, TechTool told me something about bad SMART and some bad sectors on the internal HD.

So I analyzed the HD with TestDisk (HD is seen by the Ubuntu, but not accessible).
I attach a protocol, as I do not know how to proceed further now.
Thanks for any advice (and: I am not a Pro and need simple explanations and no big terminal round-abouts; simple this yes, explanations great!)

START


TestDisk 6.11.3, Data Recovery Utility, May 2009
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sda - 250 GB / 232 GiB - ATA WDC WD2500JS-40T
[None ] Non partitioned media
[Mac ] was also tried in another atempt
[Analyze]
Disk /dev/sda - 250 GB / 232 GiB - CHS 30401 255 63
Current partition structure:
Partition Start End Size in sectors

P Unknown 0 0 1 30401 80 63 488397168
unusual structure
Disk /dev/sda - 250 GB / 232 GiB - CHS 30401 255 63
Partition Start End Size in sectors
P FAT32 0 0 41 25 127 14 409600 [EFI]
P HFS+ 25 127 15 30384 254 22 487725344

[Deaper Search]
Disk /dev/sda - 250 GB / 232 GiB - CHS 30401 255 63
Analyse cylinder 25/30400: 00%
check_FAT: Unusual media descriptor (0xf0!=0xf8)
Warning: Incorrect number of heads/cylinder 16 (FAT) != 255 (HD)
Warning: Incorrect number of sectors per track 32 (FAT) != 63 (HD)
FAT32 0 0 41 25 127 14 409600 [EFI]
check_FAT: Unusual media descriptor (0xf0!=0xf8)
Warning: Incorrect number of heads/cylinder 16 (FAT) != 255 (HD)
Warning: Incorrect number of sectors per track 32 (FAT) != 63 (HD)
FAT32 0 0 47 25 127 20 409600 [EFI]
HFS+ 25 127 15 30384 254 22 487725344
HFS+ 26 119 63 30385 247 7 487725344
HFS+ 26 134 63 30386 7 7 487725344
HFS+ 26 151 9 30386 23 16 487725344
HFS+ 26 161 52 30386 33 59 487725344
HFS+ 26 181 9 30386 53 16 487725344
HFS+ 29 56 13 30388 183 20 487725344
HFS+ 29 64 46 30388 191 53 487725344
HFS+ 29 68 3 30388 195 10 487725344
HFS+ 29 82 10 30388 209 17 487725344
HFS+ 29 92 21 30388 219 28 487725344
HFS+ 29 105 43 30388 232 50 487725344
HFS+ 29 119 50 30388 246 57 487725344
Disk /dev/sda - 250 GB / 232 GiB - CHS 30401 255 63
Analyse cylinder 249/30400: 00%
Read error at 248/10/41 (lba=3984790)
Analyse cylinder 250/30400: 00%
Read error at 249/222/44 (lba=4014214)

after some minutes I got these numbers in a row,
than I had to cancel as nothing did happen.

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stepstep
Posts: 2
Joined: 20 Feb 2013, 20:59

Re: iMac HD corrupted

#2 Post by stepstep » 21 Feb 2013, 22:09

Meanwhile, I was able to detect the HD, even see the correct name in Partition2. In partition1 I found an EFI System (small). To create images was possible.
Than the question came: do you want to save partition file image.dd in /home/ubuntu ?
For the EFI system this works out, fast.

Fot the Mac HFS the superblock analysis is OK. Sectors identical.
Image creation: same directory pathes found, but 0% (no progress), so I cancel. :cry:

Is it than possible that I have a physical damage or is there a way to recover data?

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