FusionDrive Bootcamp/OSX/SSD combine.Need recover

How to use TestDisk to recover lost partition
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wangwang
Posts: 4
Joined: 27 Dec 2020, 09:11

FusionDrive Bootcamp/OSX/SSD combine.Need recover

#1 Post by wangwang »

Hi experts:
My imac is 2013late intel 1T fusion (128G SSD + 1T HD) ,Now run catalina 10.15.5 and boot camp (100G win7). Time machine backup was 2014.2. When I Update OSX to 10.15.7 , before update do not backup again :( since 8 years many updates with no problem. I estimate there are 450G at OSX, 60-80G at win7
1.After update OSX 10.15.5 to 10.15.7 ,restart , as logo appear for 10s, auto shut down.
2.command+R install OSX to HD, "installing"wait for 1 hour, "macOS not install on your computer. Storage system verify or repair failed.(-69716)". I tried two times same result. At that time I can boot into win7.
3.Command+option+R try install OS X, When choice where to install, No Macintosh HD,only Boot Camp, so I stop install.
4.Command+option+R , Run disk utility, I can see 3 partition:128G SSD + 1T MacintoshHD + 100G Boot Camp. But 1T MacintoshHD was grey colour. So I [first aid] [repair] in disk utility. It runs for a few second and copleted. But three partition combine into one partition, which name is MacintoshHD 1.12T , 700Mb + 20 file folder in it. I restart iMac both OSX and win7 died.
5. Command+option+R online install OSX catalina 10.15.7 to a 64G USB drive, start up iMac, run finder, i can see a empty 1T drive.
6.I use 64G USB drive to start iMac OSX catalina 10.15.7, run disk drill V4.1.206, there are lots of files such as pictures and mp3 in the 1T fusion drive. It needs 6 hours to scan so I abort.
Disk utility show:
Image
Image

diskutil list:
Image

7.I use 64G USB drive to start iMac OSX catalina 10.15.7, run homebrew , run testdisk, deep search need a long time so I abort deep search.
testdisk log file:
https://drive.google.com/file/d/17MWggG ... sp=sharing

I think if 3 partition come back , maybe I can see files when I use USB drive start iMac. If it's possible, I do not need run disk drill to rescue data.
what's the next move?
Thank you
Last edited by wangwang on 28 Dec 2020, 16:03, edited 2 times in total.

recuperation
Posts: 2721
Joined: 04 Jan 2019, 09:48
Location: Hannover, Deutschland (Germany, Allemagne)

Re: FusionDrive Bootcamp&OSX&SSD combine.Need recover

#2 Post by recuperation »

I don't use a Mac.
The message "Storage system verify or repair failed.(-69716)" would suggest to me to duplicate the drive using ddrescue.

Otherwise you would try to look into the found partitions using the "p"-key.
If that fails, run deep search.

wangwang
Posts: 4
Joined: 27 Dec 2020, 09:11

Re: FusionDrive Bootcamp&OSX&SSD combine.Need recover

#3 Post by wangwang »

recuperation wrote: 28 Dec 2020, 11:30 I don't use a Mac.
The message "Storage system verify or repair failed.(-69716)" would suggest to me to duplicate the drive using ddrescue.

Otherwise you would try to look into the found partitions using the "p"-key.
If that fails, run deep search.
thank you.

Analyse Disk /dev/rdisk2 - 1114 GB / 1038 GiB - 2177723648 sectors

HFS+ magic value at 0/0/1

HFS+ magic value at 0/0/1
part_size 2177723648

HFS+ magic value at 0/0/1

HFS+ magic value at 0/0/1
Current partition structure:
P HFS+ 0 2177723647 2177723648

search_part()
Disk /dev/rdisk2 - 1114 GB / 1038 GiB - 2177723648 sectors

HFS+ magic value at 0/0/1

HFS+ magic value at 0/0/1
part_size 2177723648
HFS+ 0 2177723647 2177723648
HFS+ blocksize=4096 + Backup, 1114 GB / 1038 GiB

Results
P HFS+ 0 2177723647 2177723648
HFS+ blocksize=4096 + Backup, 1114 GB / 1038 GiB

interface_write()
P HFS+ 0 2177723647 2177723648

Write isn't available because the partition table type "None" has been selected.
New options :
Dump : No
Align partition: Yes
Expert mode : No


"Write isn't available because the partition table type "None" has been selected." why???
I don't choose None, auto select None.

Thank you!

recuperation
Posts: 2721
Joined: 04 Jan 2019, 09:48
Location: Hannover, Deutschland (Germany, Allemagne)

Re: FusionDrive Bootcamp/OSX/SSD combine.Need recover

#4 Post by recuperation »

The file content looks strange to me.
Could you upload the full file as an attachment using the attachment tab?

Did you use the p-key?
What about deep search?

wangwang
Posts: 4
Joined: 27 Dec 2020, 09:11

Re: FusionDrive Bootcamp/OSX/SSD combine.Need recover

#5 Post by wangwang »

recuperation wrote: 29 Dec 2020, 11:07 The file content looks strange to me.
Could you upload the full file as an attachment using the attachment tab?

Did you use the p-key?
What about deep search?
ok, I tried P and deep search:
4 deep search result.png
4 deep search result.png (112.48 KiB) Viewed 1195 times
6 deep search - continue - P.png
6 deep search - continue - P.png (79.66 KiB) Viewed 1195 times
7 advanced-superblock.png
7 advanced-superblock.png (90.78 KiB) Viewed 1195 times
thank you.
testdisk full deep search.log

wangwang
Posts: 4
Joined: 27 Dec 2020, 09:11

Re: FusionDrive Bootcamp/OSX/SSD combine.Need recover

#6 Post by wangwang »

recuperation wrote: 29 Dec 2020, 11:07 The file content looks strange to me.
Could you upload the full file as an attachment using the attachment tab?

Did you use the p-key?
What about deep search?
testdisk full deep search.log ,I not know , can't upload, I share link:
https://drive.google.com/file/d/1deUmDY ... sp=sharing

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