I can no longer boot into my Windows 7 Boot Camp partition. I had created a third partition for installing Mountain Lion to test some old software so maybe that's the reason? How do I get back into Win7 Boot Camp?
MacBook Air 13", macOS 10.14
Rebuild MBR to match the new GPT information thus resetting the Hybrid MBR. Use defaults for other questions (like partition codes). The only values that need modifications are the Boot flags and step 10. Accept all other defaults that Gdisk offers. Please see thesample Q&A as an example. These steps can be repeated if you make a mistake before you get to Step 12, otherwise start from Step 1 for these steps. Step 6 has numbers which are typed with a space between the numbers. Please see the sample Q&A before you execute these steps.
Here is sample Q&A for this section. Please notice the Press Enter/Return.
Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y
Creating entry for GPT partition #2 (MBR partition #2)
Enter an MBR hex code (default AF): Press Enter/Return
Set the bootable flag? (Y/N): N
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default 07): Press Enter/Return
Set the bootable flag? (Y/N): Y
If you are asked about additional space, say 'N' and continue.
Please disable SIP, temporarily, using csrutil in Local Recovery.
You have Registry entries which were not cleaned up by SysPrep. See Solution for Bootcamp 6 error on Windows … - Apple Community.
Excellent! I suggest you create a baseline backup of the 2018 W10 using Winclone.
MBA:~ chuckkahn$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 364.4 GB disk0s2
3: Apple_HFS Mountain Lion HD 35.0 GB disk0s3
4: Apple_Boot Recovery HD 650.0 MB disk0s4
5: Microsoft Basic Data BOOTCAMP 100.0 GB disk0s5
/dev/disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +364.4 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD 337.0 GB disk1s1
2: APFS Volume Preboot 44.0 MB disk1s2
3: APFS Volume Recovery 510.5 MB disk1s3
4: APFS Volume VM 2.1 GB disk1s4
MBA:~ chuckkahn$ sudo gpt -vv -r show /dev/disk0
Password:
Sorry, try again.
Password:
gpt show: unable to open device '/dev/disk0': Operation not permitted
MBA:~ chuckkahn$
MBA:~ chuckkahn$ sudo fdisk /dev/disk0
fdisk: /dev/disk0: Operation not permitted
Disk Utility:
Applying changes to "APPLE SSD SM0512F Media"
(Running operation 1 of 1: Remove "Mountain Lion HD"...
"The volume /dev/disk0s2 appears to be OK"
Progress bar is fully blue
MBA is unresponsive. Mouse pointer can move but nothing clicked with it does anything..
Also I can see that the time in the Mac status bar is frozen at 8:26PM. (It is now 9:57 PM)
I'll leave the MBA on the desk in this state until notified with further instructions.... I can't even turn down the brightness.
MBA:~ chuckkahn$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 364.4 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
4: Microsoft Basic Data BOOTCAMP 100.0 GB disk0s4
/dev/disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +364.4 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD 334.5 GB disk1s1
2: APFS Volume Preboot 44.0 MB disk1s2
3: APFS Volume Recovery 510.5 MB disk1s3
4: APFS Volume VM 1.1 GB disk1s4
MBA:~ chuckkahn$
MBA:~ chuckkahn$ diskutil eraseVolume free free disk0s3
Started erase on disk0s3 Recovery HD
Unmounting disk
Finished erase on disk0
MBA:~ chuckkahn$
MBA:~ chuckkahn$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 364.4 GB disk0s2
3: Microsoft Basic Data BOOTCAMP 100.0 GB disk0s4
/dev/disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +364.4 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD 348.8 GB disk1s1
2: APFS Volume Preboot 44.0 MB disk1s2
3: APFS Volume Recovery 510.5 MB disk1s3
4: APFS Volume VM 2.1 GB disk1s4
MBA:~ chuckkahn$ diskutil apfs resizeContainer disk0s2 limits
Resize limits for APFS Physical Store partition disk0s2:
Current Physical Store partition size on map: 364.4 GB (364407238656 Bytes)
Minimum (constrained by file/snapshot usage): 364.4 GB (364407238656 Bytes)
Recommended minimum (if used with macOS): 364.4 GB (364407238656 Bytes)
Maximum (constrained by partition map space): 400.1 GB (400068423680 Bytes)
MBA:~ chuckkahn$
How long will this take? I remotely logged in to the MBA to start this and since 11:45 AM ET the MBA is listed as offline. I tried to copy and paste what I was seeing on terminal but that's when the remote session booted me off. Presumably because this is an resource intensive operation that has overwhelmed the MBA's ability to accept remote connections? (Teamviewer and Chrome Remote Desktop have failed) Should I just wait for remote connect-ability to return or is there something wrong that requires me to return on site?
Okay I've returned to site and the MBA screen is in the same state as when I was booted off remotely.
F1, F2 brightness controls do not respond.
Caps lock lights on/off green when pressed.
I don't see a mouse pointer when I swish around the trackpad.
I can't copy paste so I will manually type what I see in the dim terminal window. 15.0% is where it was at at 11:45 AM ET when I was booted out of remote.
So MBA appears to be frozen? Power off manually? Wait?
warning: Overallocation Detected on Main device: (163456+64) bitmap address (18d7c20)
warning: Overallocation Detected on Main device: (163520+64) bitmap address (18d7c20)
warning: Overallocation Detected on Main device: (163584+64) bitmap address (18d7c20)
too many warnings generated; suppressing subsequent ones
The volume /dev/disk/0s2 appears to be OK
[ \ 0%..10%...............................................] 15.0%
MBA was powered off when I returned to site this morning. Powered on. Here's the output of diskutil list. Rebooting with option key held down results in black screen with spinning grey wheel icon. Rebooting with command-R press leads to recovery mode. Running first aid on Macintosh HD in recovery mode.
Last login: Mon Dec 16 11:12:21 on console
MBA:~ chuckkahn$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 364.4 GB disk0s2
3: Microsoft Basic Data BOOTCAMP 100.0 GB disk0s3
/dev/disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +364.4 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD 346.0 GB disk1s1
2: APFS Volume Preboot 44.0 MB disk1s2
3: APFS Volume Recovery 510.5 MB disk1s3
4: APFS Volume VM 1.1 GB disk1s4
MBA:~ chuckkahn$
MBA:~ chuckkahn$
Attempting to go into recovery mode to disable SIP. All I'm seeing is black screen with spinning grey wheel again.
Here's the output of those commands:
MBA:~ chuckkahn$ sudo gpt -vv -r show /dev/disk0
Password:
Sorry, try again.
Password:
gpt show: unable to open device '/dev/disk0': Operation not permitted
MBA:~ chuckkahn$ sudo fdisk /dev/disk0
fdisk: /dev/disk0: Operation not permitted
MBA:~ chuckkahn$
MBA:~ chuckkahn$ sudo fdisk /dev/disk0
fdisk: /dev/disk0: Operation not permitted
MBA:~ chuckkahn$ sudo gpt -vv -r show /dev/disk0
gpt show: unable to open device '/dev/disk0': Operation not permitted
MBA:~ chuckkahn$
Powered down and tried recovery mode again and disabled SIP.
MBA:~ chuckkahn$ sudo gpt -vv -r show /dev/disk0
Password:
gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 977105059
start size index contents
0 1 PMBR
1 1 Pri GPT header
2 32 Pri GPT table
34 6
40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
409640 711732888 2 GPT part - 7C3457EF-0000-11AA-AA11-00306543ECAC
712142528 69650752
781793280 195311616 3 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7
977104896 131
977105027 32 Sec GPT table
977105059 1 Sec GPT header
MBA:~ chuckkahn$ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: EE 1023 254 63 - 1023 254 63 [ 1 - 977105059] <Unknown ID>
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
MBA:~ chuckkahn$
Y/N on "unused partition space" query?
Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): Y
Creating entry for GPT partition #2 (MBR partition #2)
Enter an MBR hex code (default AF):
Set the bootable flag? (Y/N): N
Creating entry for GPT partition #3 (MBR partition #3)
Enter an MBR hex code (default 07):
Set the bootable flag? (Y/N): Y
Unused partition space(s) found. Use one to protect more partitions? (Y/N):
'o' is different than 10's 'O'
Recovery/transformation command (? for help): ?
b use backup GPT header (rebuilding main)
c load backup partition table from disk (rebuilding main)
d use main GPT header (rebuilding backup)
e load main partition table from disk (rebuilding backup)
f load MBR and build fresh GPT from it
g convert GPT into MBR and exit
h make hybrid MBR
i show detailed information on a partition
l load partition data from a backup file
m return to main menu
o print protective MBR data
p print the partition table
q quit without saving changes
t transform BSD disklabel partition
v verify disk
w write table to disk and exit
x extra functionality (experts only)
? print this menu
Recovery/transformation command (? for help):
Boot Camp partition not mounting