Backups-MacBook-Pro:~ backup$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *500.3 GB disk0
1: Windows_LDM 425.3 GB disk0s1
2: Windows_LDM 64.5 GB disk0s2
3: Windows_LDM 10.5 GB disk0s3
/dev/disk1 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Untitled 1 999.3 GB disk1s2
3: Apple_Boot Recovery HD 650.0 MB disk1s3
Backups-MacBook-Pro:~ backup$
Backups-MacBook-Pro:~ backup$ sudo gdisk /dev/disk0
Password:
GPT fdisk (gdisk) version 1.0.1
Caution: invalid backup GPT header, but valid main header; regenerating
backup header from main header.
Caution! After loading partitions, the CRC doesn't check out!
Warning! Main and backup partition tables differ! Use the 'c' and 'e' options
on the recovery & transformation menu to examine the two tables.
Warning! One or more CRCs don't match. You should repair the disk!
Partition table scan:
MBR: MBR only
BSD: not present
APM: not present
GPT: damaged
Found valid MBR and corrupt GPT. Which do you want to use? (Using the
GPT MAY permit recovery of GPT data.)
1 - MBR
2 - GPT
3 - Create blank GPT
Your answer:
When I entered the sudo command, it gave me a popup saying that the disk I inserted is not readable by the computer (strange since it's brand new). It gave an option to Initialize, Ignore or eject. Initialize is taking me to disk utility. Not sure if it is relevant to anything but stating what I found.
