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User profile for user: mustafafromsancaktepe
mustafafromsancaktepe Author
User level: Level 1
4 points

A Folder with a Question Mark Blinking on It at Startup

I am using a Mac, model name A1534.

I have tried bootcamp Windows 10 before. I have not much more problems with that but it was too slowly. So, I have decided to install Windows 7. But Bootcamp doesn't support it anymore, so I installed Virtual Box.

I tried to install Windows 7 a couple of times with Virtual Box, but while in installation progress, Windows 7 couldn't see my hard drive (I have prepared my partition as NTFS with using Disk Utility).

After struggling many more, I restart my mac, then I saw a folder image with a question mark blinking on that.

I tried thousand of codes for 2 days. I installed Yosemite on a flash drive, and open my computer. Disk Utility can't repair or verify my hard drive like that way too.

I can't mount my hard drive. I tried many times. I don't want to format my computer because I have lots of document on that.

I think it's logical problem, I see like that when I tried. How can I repair my disk? I need help.


1)


This is the problem I think.


Block 2 is not an MDB or Volume Header

Block xxxxx is not an MDB or Volume Header

I forgot which codes I used to take these error messages.


2)


Vera$ sudo diskutil repairvolume disk0s2

Password:

Started file system repair on disk0s2

Repairing file system

File system check exit code is 8

Updating boot support partitions for the volume as required

Error: -69845: File system verify or repair failed

Underlying error: 8: POSIX reports: Exec format error


3)


Vera$ sudo fsck -fy /dev/disk0s2

fsck usage: fsck [-fdnypq] [-l number]

Mustafas-MacBook:~ Vera$ sudo fsck_hfs -fy /dev/disk0s2

** /dev/rdisk0s2

Executing fsck_hfs (version hfs-285).

volumeType is 0

0000: 8093 a908 675a 4868 0100 0000 0000 0000 |....gZHh........|

0010: 9974 0c00 0000 0000 0100 0080 0000 0000 |.t..............|

0020: 4e58 5342 0010 0000 e68f 6a06 0000 0000 |NXSB......j.....|

0030: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

0040: 0200 0000 0000 0000 c0a9 af41 efbb 4937 |...........A..I7|

0050: a383 4235 6120 2908 484e 1900 0000 0000 |..B5a...HN......|

0060: 9a74 0c00 0000 0000 1801 0000 306c 0000 |.t..........0l..|

0070: a6a1 0000 0000 0000 a30e 0000 0000 0000 |................|

0080: 1e00 0000 b90b 0000 1c00 0000 0200 0000 |................|

0090: 900b 0000 2900 0000 7e4b 1900 0000 0000 |.........K......|

00a0: 2972 e805 0000 0000 0104 0000 0000 0000 |.r..............|

00b0: 0000 0000 6400 0000 0304 0000 0000 0000 |....d...........|

00c0: 75e7 0100 0000 0000 78e7 0100 0000 0000 |u.......x.......|

00d0: 588a 0200 0000 0000 0000 0000 0000 0000 |X...............|

00e0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

01f0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|


4)


Vera$ diskutil mount readOnly /dev/disk0s2

Volume on disk0s2 failed to mount

If the volume is damaged, try the "readOnly" option


5)


Vera$ diskutil info /dev/disk0

Device Identifier: disk0

Device Node: /dev/disk0

Part of Whole: disk0

Device / Media Name: APPLE SSD AP0512H Media


Volume Name: Not applicable (no file system)


Mounted: Not applicable (no file system)


File System: None


Content (IOContent): GUID_partition_scheme

OS Can Be Installed: No

Media Type: Generic

Protocol: PCI-Express

SMART Status: Not Supported


Total Size: 500.3 GB (500277788672 Bytes) (exactly 977105056 512-Byte-Units)

Volume Free Space: Not applicable (no file system)

Device Block Size: 4096 Bytes


Read-Only Media: No

Read-Only Volume: Not applicable (no file system)


6)


Vera$ sudo fsck_hfs /dev/disk0s2

** /dev/rdisk0s2

Executing fsck_hfs (version hfs-285).

volumeType is 0

0000: 8093 a908 675a 4868 0100 0000 0000 0000 |....gZHh........|

0010: 9974 0c00 0000 0000 0100 0080 0000 0000 |.t..............|

0020: 4e58 5342 0010 0000 e68f 6a06 0000 0000 |NXSB......j.....|

0030: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

0040: 0200 0000 0000 0000 c0a9 af41 efbb 4937 |...........A..I7|

0050: a383 4235 6120 2908 484e 1900 0000 0000 |..B5a...HN......|

0060: 9a74 0c00 0000 0000 1801 0000 306c 0000 |.t..........0l..|

0070: a6a1 0000 0000 0000 a30e 0000 0000 0000 |................|

0080: 1e00 0000 b90b 0000 1c00 0000 0200 0000 |................|

0090: 900b 0000 2900 0000 7e4b 1900 0000 0000 |.........K......|

00a0: 2972 e805 0000 0000 0104 0000 0000 0000 |.r..............|

00b0: 0000 0000 6400 0000 0304 0000 0000 0000 |....d...........|

00c0: 75e7 0100 0000 0000 78e7 0100 0000 0000 |u.......x.......|

00d0: 588a 0200 0000 0000 0000 0000 0000 0000 |X...............|

00e0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

01f0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|


Ejectable: No


Whole: Yes

Internal: Yes

Solid State: Yes

OS 9 Drivers: No

Low Level Format: Not supported


7)


Vera$ sudo gpt -r show /dev/disk0

Password:

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 4 Pri GPT table

6 76800 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

76806 107614182 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

107690988 32768

107723756 14381603 3 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

122105359 32768

122138127 4 Sec GPT table

122138131 1 Sec GPT header


8)


Vera$ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB disk0

1: EFI EFI 314.6 MB disk0s1

2: Apple_HFS 440.8 GB disk0s2

3: Apple_HFS Untitled 2 58.9 GB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *30.8 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_HFS Yosemite 29.9 GB disk1s2

3: Apple_Boot Recovery HD 650.0 MB disk1s3


9)


Vera$ sudo gpt -r -vv show /dev/disk0

gpt show: /dev/disk0: mediasize=500277788672; sectorsize=4096; blocks=122138132

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 122138131

start size index contents

0 1 PMBR

1 1 Pri GPT header

2 4 Pri GPT table

6 76800 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

76806 107614182 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

107690988 32768

107723756 14381603 3 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

122105359 32768

122138127 4 Sec GPT table

122138131 1 Sec GPT header


10)


I tried most of them the codes below. but nothing has changed.


-d
 debugging information. 
-D flags
 extra debugging information. 
0x0001
Informational
0x0002
Error 
0x0010
Extended attributes 
0x0020
Overlapped extents 
0x0033
include all 
-b bytes
 size of the physical blocks used by 
-B
 
-B path
 Output the files containing the physical blocks listed in the file 
path
.
The file contains decimal, octal (with leading 0) or hexadecimal (with leading 0x) physical block numbers, separated by white space, relative to the start of the partition, For block numbers relative to the start of the device, subtract the block number of the start of the partition.
The size of a physical block is given with the 
-b
option; the default is 512 bytes per block.		 
-f
 with 
-p
force check of `clean' file systems,
otherwise force check and repair journaled HFS+ file systems.		 
-g
 generate output strings in GUI format. This option is used when another application with a graphical user interface (like Mac OS X Disk Utility) is invoking the fsck_hfs tool. 
-x
 generate output strings in XML (plist) format. implies 
-g
 
-l
 Lock down the file system (not limit parallel check as in other versions of fsck> and perform a test-only check. This makes it possible to check a file system that is currently mounted, although no repairs can be made. 
-m rwxrwxrwx
 permissions for the 
lost+found
directory if it is created (suggest 700 ed). orphaned files and directories are moved to the 
lost+found
directory (located at the root of the volume). The default mode is 01777.(bad)!		 
-c size
 size of the cache used by fsck_hfs internally. Bigger size can result in better performance but can result in deadlock when used with 
-l
. Decimal, octal, or hexadecimal number.
If the number ends with a 
k,m or g
 
-p
 Preen the specified file systems. 
-q
 Causes fsck_hfs to quickly check whether the volume was unmounted cleanly. If the volume was unmounted cleanly, then the exit status is 0. If the volume was not unmounted cleanly, then the exit status will be non-zero. In either case, a message is printed to standard output describing whether the volume was clean or dirty. 
-y
 Always attempt to repair any damage that is found. 
-n
 Never 
-E
 exit (with a value of 47) if it encounters any major errors. A ``major error'' is considered one which would impact using the volume in normal usage; an incon- sistency which would not impact such use is considered ``minor'' for this option. Only valid with the -n option. 
-S
 scan the entire device looking for I/O errors. It will attempt to map the blocks with errors to names, similar to the -B option. 
-R flags
 Rebuilds the requested btree. The following flags are supported: 
a
Attribute btree
c
Catalog btree
e
Extents overflow btree
Requires free space on the file system for the new btree file, and if fsck_hfs is able to traverse each of the nodes in the requested btree successfully. Rebuilding btrees is not supported on HFS Standard volumes.		 
-r
 Rebuild the catalog btree. This is synonymous with -Rc. Because of inconsistencies between the block device and the buffer cache, the raw device should always be used.


Any ideas???

MacBook, iOS 11.4, Model No A1534

Posted on Aug 12, 2018 2:09 AM

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User profile for user: Stuart423
Stuart423
User level: Level 6
9,258 points

Posted on Aug 12, 2018 10:51 AM

If you see a folder with a question mark appear instead of the Apple logo, it means your Mac couldn't find a local or network-based startup disk. This can happen if the disk selected in the Startup Disk pane of System Preferences isn't available. Wait a few seconds to see if your Mac is able to locate the startup disk you specified.

If you still see a question mark after waiting a few seconds, use Startup Manager to start up your Mac, then select your startup disk from System Preferences.

If a question mark appears after you install a software update, select your startup disk again using macOS Recovery.

About the screens you see when your Mac starts up - Apple Support

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Question marked as Best reply
User profile for user: Stuart423
Stuart423
User level: Level 6
9,258 points

Aug 12, 2018 10:51 AM in response to mustafafromsancaktepe

If you see a folder with a question mark appear instead of the Apple logo, it means your Mac couldn't find a local or network-based startup disk. This can happen if the disk selected in the Startup Disk pane of System Preferences isn't available. Wait a few seconds to see if your Mac is able to locate the startup disk you specified.

If you still see a question mark after waiting a few seconds, use Startup Manager to start up your Mac, then select your startup disk from System Preferences.

If a question mark appears after you install a software update, select your startup disk again using macOS Recovery.

About the screens you see when your Mac starts up - Apple Support

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User profile for user: mustafafromsancaktepe
mustafafromsancaktepe Author
User level: Level 1
4 points

Aug 12, 2018 10:49 AM in response to mustafafromsancaktepe

here is the code I used. it gave the block errors.


Vera$ sudo fsck_hfs -r -d /dev/disk0s2

Password:

journal_replay(/dev/disk0s2) returned 22

** /dev/rdisk0s2

Using cacheBlockSize=32K cacheTotalBlock=32768 cacheSize=1048576K.

Executing fsck_hfs (version hfs-285).

Block 2 is not an MDB or Volume Header

Block 860913454 is not an MDB or Volume Header

volumeType is 0

0000: 8093 a908 675a 4868 0100 0000 0000 0000 |....gZHh........|

0010: 9974 0c00 0000 0000 0100 0080 0000 0000 |.t..............|

0020: 4e58 5342 0010 0000 e68f 6a06 0000 0000 |NXSB......j.....|

0030: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

0040: 0200 0000 0000 0000 c0a9 af41 efbb 4937 |...........A..I7|

0050: a383 4235 6120 2908 484e 1900 0000 0000 |..B5a...HN......|

0060: 9a74 0c00 0000 0000 1801 0000 306c 0000 |.t..........0l..|

0070: a6a1 0000 0000 0000 a30e 0000 0000 0000 |................|

0080: 1e00 0000 b90b 0000 1c00 0000 0200 0000 |................|

0090: 900b 0000 2900 0000 7e4b 1900 0000 0000 |.........K......|

00a0: 2972 e805 0000 0000 0104 0000 0000 0000 |.r..............|

00b0: 0000 0000 6400 0000 0304 0000 0000 0000 |....d...........|

00c0: 75e7 0100 0000 0000 78e7 0100 0000 0000 |u.......x.......|

00d0: 588a 0200 0000 0000 0000 0000 0000 0000 |X...............|

00e0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

. . .

01f0: 0000 0000 0000 0000 0000 0000 0000 0000 |................|

unknown volume type

primary MDB is at block 0 0x00

alternate MDB is at block 0 0x00

primary VHB is at block 0 0x00

alternate VHB is at block 0 0x00

sector size = 512 0x200

VolumeObject flags = 0x01

total sectors for volume = 860913456 0x33507f30

total sectors for embedded volume = 0 0x00

CheckForClean - unknown volume type

CheckHFS returned 6, fsmodified = 0

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A Folder with a Question Mark Blinking on It at Startup

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