Cannot recover partition table

[scottgmcleod]

Hi

my son was using the MacOS version of Lightroom on the photos on his external hard drive. For some reason, Lightroom froze. After forcing it to quit, he could not see any contents of the external drive & it refuses to unmount saying "there is an application using the drive".

Running the df command shows this:
Filesystem 512-blocks Used Available Capacity iused ifree %iused Mounted on
/dev/disk0s2 1951845952 1099349024 851984928 57% 137482626 106498116 56% /
devfs 382 382 0 100% 661 0 100% /dev
map -hosts 0 100% 0 100% 0 0 100% /net
map auto_home 0 0 0 100% 0 0 100% /home
/dev/disk1s1 1953519496 1898166080 55353416 98% 237270758 6919177 97% /Volumes/USB Hard Drive

Started testDisk & it stops at "Trying alternate GPT". I have the log file but cannot see how to attach it to this message so have cut & paste the first page. Any assistance you can provide is very welcome!

Thanks

Mon May 18 20:41:12 2020
Command line: TestDisk

TestDisk 7.2-WIP, Data Recovery Utility, May 2020
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org
OS: Darwin, kernel 15.6.0 (Darwin Kernel Version 15.6.0: Thu Jun 21 20:07:40 PDT 2018; root:xnu-3248.73.11~1/RELEASE_X86_64) x86_64
Compiler: GCC 4.0
Compilation date: 2020-05-06T08:06:30
ext2fs lib: 1.42.8, ntfs lib: libntfs-3g, reiserfs lib: none, ewf lib: none, curses lib: ncurses 5.4
User is not root!
Hard disk list


TestDisk exited normally.
Using locale 'en_AU.UTF-8'.


Mon May 18 20:41:12 2020
Command line: TestDisk /debug

TestDisk 7.2-WIP, Data Recovery Utility, May 2020
Christophe GRENIER <grenier@cgsecurity.org>
https://www.cgsecurity.org
OS: Darwin, kernel 15.6.0 (Darwin Kernel Version 15.6.0: Thu Jun 21 20:07:40 PDT 2018; root:xnu-3248.73.11~1/RELEASE_X86_64) x86_64
Compiler: GCC 4.0
Compilation date: 2020-05-06T08:06:30
ext2fs lib: 1.42.8, ntfs lib: libntfs-3g, reiserfs lib: none, ewf lib: none, curses lib: ncurses 5.4
Hard disk list
Disk /dev/disk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO), sector size=512
Disk /dev/disk1 - 1000 GB / 931 GiB - 1953519616 sectors (RO), sector size=512
Disk /dev/disk2 - 16 MB / 15 MiB - 32212 sectors (RO), sector size=512
Disk /dev/disk3 - 4000 GB / 3725 GiB - 7813969920 sectors (RO), sector size=512
Disk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO), sector size=512
Disk /dev/rdisk1 - 1000 GB / 931 GiB - 1953519616 sectors (RO), sector size=512
Disk /dev/rdisk2 - 16 MB / 15 MiB - 32212 sectors (RO), sector size=512
Disk /dev/rdisk3 - 4000 GB / 3725 GiB - 7813969920 sectors (RO), sector size=512

Partition table type defaults to EFI GPT
Media is opened in read-only.
Disk /dev/disk1 - 1000 GB / 931 GiB (RO)
Partition table type: EFI GPT

Analyse Disk /dev/disk1 - 1000 GB / 931 GiB - 1953519616 sectors (RO)
Trying alternate GPT
Current partition structure:
Trying alternate GPT

search_part()
Disk /dev/disk1 - 1000 GB / 931 GiB - 1953519616 sectors (RO)
file_pread(5,1,buffer,34(34/0/1)) read err: Input/output error
file_pread(5,1,buffer,35(35/0/1)) read err: Input/output error
file_pread(5,14,buffer,36(36/0/1)) read err: Input/output error
file_pread(5,3,buffer,50(50/0/1)) read err: Input/output error
file_pread(5,3,buffer,97(97/0/1)) read err: Input/output error
file_pread(5,8,buffer,113(113/0/1)) read err: Input/output error
file_pread(5,11,buffer,160(160/0/1)) read err: Input/output error
file_pread(5,2,buffer,2082(2082/0/1)) read err: Input/output error
file_pread(5,1,buffer,53(53/0/1)) read err: Input/output error
file_pread(5,1,buffer,100(100/0/1)) read err: Input/output error

[cgrenier]

All read operations failed, the disk head may be stuck or damaged, you should contact a data recovery company.