Wanbliwichaca

Q: Bootcamp not booting after install rEFInd for dual boot

This is my 1st post on this site, hope I don't screw up.

I tried to install rEFInd boot manager and screwed up my Bootcamp so windows 8 will not boot. It does show up on boot holding the option key, but it does nothing but a black screen when selected. Same when selecting to boot from CD/DVD, black screen. I've read a few posts similar to this but he suggestions from "LonerT" did not fix my issue. I'm hoping LonerT or someone of his knowledge base is available to help me, I really don't want to reinstall window if it can be helped. :-)

Here's the information requested by LonerT in previous posts:

av-server-enet:~ joe$ diskutil list

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *750.2 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:       Microsoft Basic Data BOOTCAMP                749.9 GB   disk0s2

/dev/disk1

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *750.2 GB   disk1

   1:                        EFI EFI                     209.7 MB   disk1s1

   2:                  Apple_HFS Macintosh HD            150.4 GB   disk1s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

   4:       Microsoft Basic Data KodiBuntu               598.9 GB   disk1s4

/dev/disk2

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                            ESD-ISO                *4.7 GB     disk2

av-server-enet:~ joe$ sudo fdisk -e /dev/disk0

Password:

fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

Enter 'help' for information

 

av-server-enet:~ joe$ diskutil cs list

No CoreStorage logical volume groups found

 

av-server-enet:~ joe$ sudo gpt -vv -r show /dev/disk0

Password:

gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Malformed MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: error: bogus map

gpt show: unable to open device '/dev/disk0': Undefined error: 0

 

av-server-enet:~ joe$ sudo fdisk /dev/disk0

Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

Signature: 0xAA55

         Starting       Ending

#: id  cyl  hd sec -  cyl  hd sec [     start -       size]

------------------------------------------------------------------------

1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

2: 07   25 159   7 - 1023 254  63 [    411648 -  951814144] HPFS/QNX/AUX

3: 07 1023 254  63 - 1023 254  63 [ 952225792 -  512917504] HPFS/QNX/AUX

*4: 07    0   0   0 -    0   0   0 [         0 -          0] HPFS/QNX/AUX

Mac mini, OS X Mavericks (10.9.5), Dual 750g drives

Posted on Feb 4, 2016 8:55 AM

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Q: Bootcamp not booting after install rEFInd for dual boot

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  • by Loner T,

    Loner T Loner T Feb 4, 2016 9:12 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 9:12 AM in response to Wanbliwichaca

    You do not have a Bootcamp entry in the MBR.

     

    Please download GPT Fdisk from http://sourceforge.net/projects/gptfdisk/ and install it. Once GPT Fdisk is installed, run the following steps.

     

    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 the sample 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.

    1. Sudo gdisk /dev/rdisk0
    2. P  (Print list of parts)
    3. R  (Recover)
    4. O (print current Hybrid MBR)
    5. H (chooses Hybrid)
    6. Partitions numbers to be hybridized: 2 3 4
    7. Y  (Good for GRUB question)
    8. N  (part 2 boot flag)
    9. N  (part 3 boot flag)
    10. Y  (part 4 boot flag make NTFS bootable partition)
    11. O  (print current Hybrid MBR)
    12. W (Write the new MBR)
    13. Y (Yes! write the new MBR)
    14. Reboot

     

    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 AB): Press Enter/Return

    Set the bootable flag? (Y/N): N

     

    Creating entry for GPT partition #4 (MBR partition #4)

    Enter an MBR hex code (default 07): Press Enter/Return

    Set the bootable flag? (Y/N): Y

     

    Test 1 - Does Bootcamp Volume show up in Finder?

    Test 2 - Can you see files in Bootcamp Volume?

    Test 3 - Can you select Bootcamp in System Preferences -> Startup Disk?

    Test 4 - If Test 3 is successful, select Bootcamp and Click Restart.

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 9:51 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 9:51 AM in response to Loner T

    Ok, I did a few of your steps and received responses that differ from what you showed, so I stopped at a step 8 (looking through, I screwed up by not entering the default of '07', assuming it would use the default with no entry). Also, as an FYI, Before executing any of this, I passed all 4 tests indicated at the bottom of your post (but bootcamp will not boot).

    So here's where I am and what I received back so far:

     

    av-server-enet:~ joe$ Sudo gdisk /dev/rdisk0

    Password:

    GPT fdisk (gdisk) version 1.0.1

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Partition table scan:

      MBR: hybrid

      BSD: not present

      APM: not present

      GPT: present

     

    Found valid GPT with hybrid MBR; using GPT.

     

    Command (? for help): P

    Disk /dev/rdisk0: 1465149168 sectors, 698.6 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): BF567CEC-E795-4DBA-8121-23D231AED1D2

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 1465149134

    Partitions will be aligned on 8-sector boundaries

    Total free space is 3757 sectors (1.8 MiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI System Partition

       2          411648      1465147391   698.4 GiB   0700  BOOTCAMP

     

    Command (? for help): R

     

    Recovery/transformation command (? for help): O

     

    Disk size is 1465149168 sectors (698.6 GiB)

    MBR disk identifier: 0xD97B4E06

    MBR partitions:

     

    Number  Boot  Start Sector   End Sector   Status      Code

       1                     1       409639   primary     0xEE

       2                411648    952225791   primary     0x07

       3             952225792   1465143295   primary     0x07

     

    Recovery/transformation command (? for help): H

     

    WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,

    just hit the Enter key at the below prompt and your MBR partition table will

    be untouched.

     

    Type from one to three GPT partition numbers, separated by spaces, to be

    added to the hybrid MBR, in sequence: 2 3 4

    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 07):

    Set the bootable flag? (Y/N): N

     

    GPT partition #3 does not exist or is too big; skipping.

     

    GPT partition #4 does not exist or is too big; skipping.

     

    Unused partition space(s) found. Use one to protect more partitions? (Y/N):

  • by Loner T,

    Loner T Loner T Feb 4, 2016 9:59 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 9:59 AM in response to Wanbliwichaca

    You show two disks, disk0 only has Bootcamp, disk1 has KodiBuntu. To confirm, is Disk0 dedicated to Bootcamp? If yes,

     

    1. Your MBR for disk0 has too many entries, since you have only 2 parts, disk0s1 and disk0s2. Were these created as part of some previous terminal work?

    2. If Disk1 is not related to Bootcamp, we should ignore it.

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 10:11 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 10:11 AM in response to Loner T

    First, THANK YOU for the quick responses and the help! I REALLY appreciate it!

    1.  Disk0 actually "had" another partition call "Backup", but it seems to have disappeared somehow. There was relatively important data on it, but that is secondary to getting Bootcamp to boot. But, for this discussion disk0 is a physically a separate disk and only has windows (Bootcamp) on it. As for the 2 partitions, one is shown as 'EFI' and the other as Bootcamp. I don't believe that I created any of them intentionally. The EFI one my have been created when I installed rEFInd in an attempt to have a better boot manager, which caused ALL these problems.

    2. Yes, Disk1 is NOT related to bootcamp and works just fine.

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 10:17 AM in response to Wanbliwichaca
    Level 1 (0 points)
    Feb 4, 2016 10:17 AM in response to Wanbliwichaca

    Also, how do I respond to the last request in Terminal:

    Unused partition space(s) found. Use one to protect more partitions? (Y/N):

  • by Loner T,

    Loner T Loner T Feb 4, 2016 10:30 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 10:30 AM in response to Wanbliwichaca

    Quit (or Control-C) from the Gdisk session. Can you post the output of

     

    sudo gpt -vv -r show /dev/disk0

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 10:35 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 10:35 AM in response to Loner T

    av-server-enet:~ joe$ sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Malformed MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: error: bogus map

    gpt show: unable to open device '/dev/disk0': Undefined error: 0

  • by Loner T,

    Loner T Loner T Feb 4, 2016 10:45 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 10:45 AM in response to Wanbliwichaca

    Your GPT seems to be corrupt. The steps you will need to use are only valid for GPT 2

     

    1. Sudo gdisk /dev/rdisk0
    2. P  (Print list of parts)
    3. R  (Recover)
    4. O (print current Hybrid MBR)
    5. H (chooses Hybrid)
    6. Partitions numbers to be hybridized: 2
    7. Y  (Good for GRUB question)
    8. Y  (part 2 boot flag make NTFS bootable partition)
    9. O  (print current Hybrid MBR)
    10. W (Write the new MBR)
    11. Y (Yes! write the new MBR)
    12. Reboot
  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 11:07 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 11:07 AM in response to Loner T

    Finished step 8, then received this response again:

    Creating entry for GPT partition #2 (MBR partition #2)

    Enter an MBR hex code (default 07): 07

    Set the bootable flag? (Y/N): Y

     

    Unused partition space(s) found. Use one to protect more partitions? (Y/N):

     

    How do I answer this?

  • by Loner T,

    Loner T Loner T Feb 4, 2016 11:11 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 11:11 AM in response to Wanbliwichaca

    Type 'n' and continue.

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 11:24 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 11:24 AM in response to Loner T

    Ok, completed the steps, rebooted and here's where I am;

    I see the bootcamp drive on the desktop

    I can view the files on the drive

    I open System Pref's/Startup Disk and Bootcamp shows up in the list, but it's a Folder, not a diskScreen Shot 2016-02-04 at 2.22.19 PM.png

    I'm going to attempt to boot to it from here now. I'll reply in a minute to let you know the results.

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 11:38 AM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 11:38 AM in response to Loner T

    Ok, I rebooted to the "Windows Folder" on Bootcamp from the Startup Disk window, but received only a blank screen. I did a hard boot, held down the option key and the bootcamp drive showed up as a drive (not a folder), but wouldn't boot, same black screen. BTW, the same thing happens if I load up a DVD in the external DVD drive, it shows up, but will not boot to any cd or dvd disk. Not sure if these two are related, but they could be. Also, when using the Options key at boot I also see the 'EFI Drive, which provides an alternate Boot Manager when selected. This will boot to the MAC, but not to the Bootcamp or CD/DVD. Same behavior as the MAC Boot Manager. At this point I can't even reinstall Windows 8 without the CD/DVD drive. The Mac drive boots fine, any other suggestions?

  • by Loner T,

    Loner T Loner T Feb 4, 2016 11:58 AM in response to Wanbliwichaca
    Level 7 (24,307 points)
    Safari
    Feb 4, 2016 11:58 AM in response to Wanbliwichaca

    Can you remove rEFInd?

  • by Wanbliwichaca,

    Wanbliwichaca Wanbliwichaca Feb 4, 2016 12:04 PM in response to Loner T
    Level 1 (0 points)
    Feb 4, 2016 12:04 PM in response to Loner T

    I'll try and get back to you in a few minutes.

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