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A disk read error occurred on Bootcamp

Hi, I also stepped into the famous error "A disk read error occurred. Press Ctrl+Alt+Del to restart." while booting my BOOTCAMP partition. I have seen a lot of threads about this topic but for me no solution helped as it looks like this error is a very common error for different errors.

I use an iMac (Late 2013) with a 1GB Fusion Drive. I tried to repair my partition via the disk utility but it's just tellin me that I should backup all my files. I don't have a problem with repaving my system but I want to have at least a backup of the latest files. I fear an installation, even without formatting the drive, overwrites my user folder. I also have Paragon. Does it contain an additional repair tool for NTFS drives?


This is my current distutil output:

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage 121.0 GB disk0s2

3: Apple_Boot Boot OS X 134.2 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage 298.7 GB disk1s2

3: Apple_Boot 650.1 MB disk1s3

4: Microsoft Basic Data Untitled 700.0 GB disk1s4

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *411.2 GB disk2

Logical Volume on disk0s2, disk1s2



Thank you so much for any help!

iMac, Windows 7, null

Posted on Apr 19, 2015 7:21 AM

Reply
13 replies

Apr 19, 2015 1:24 PM in response to Loner T

gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk1: Suspicious MBR at sector 0

gpt show: /dev/disk1: Pri GPT at sector 1

gpt show: /dev/disk1: Sec GPT at sector 1953525167

start size index contents

0 1 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 583388736 2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

583798376 1269760 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

585068136 408

585068544 1367185408 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

1952253952 1271183

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header



My-iMac:~ daniel$ sudo fdisk /dev/disk1

Disk: /dev/disk1 geometry: 121601/255/63 [1953525168 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: AC 1023 254 63 - 1023 254 63 [ 409640 - 583388736] <Unknown ID>

3: AB 1023 254 63 - 1023 254 63 [ 583798376 - 1269760] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 585068544 - 1367185408] HPFS/QNX/AUX

Apr 19, 2015 3:12 PM in response to Loner T

This is the output. Sorry, can't find a monospaced view for the output though.


00000000 eb 52 90 4e 54 46 53 20 20 20 20 00 02 08 00 00 |.R.NTFS .....|

00000010 00 00 00 00 00 f8 00 00 3f 00 ff 00 00 70 df 22 |........?....p."|

00000020 00 00 00 00 80 00 80 00 ff 97 7d 51 00 00 00 00 |..........}Q....|

00000030 00 00 0c 00 00 00 00 00 02 00 00 00 00 00 00 00 |................|

00000040 f6 00 00 00 01 00 00 00 04 fb 92 2a 18 93 2a 90 |...........*..*.|

00000050 34 51 aa 9f fa 33 c0 8e d0 bc 00 7c fb 68 c0 07 |4Q...3.....|.h..|

00000060 1f 1e 68 66 00 cb 88 16 0e 00 66 81 3e 03 00 4e |..hf......f.>..N|

00000070 54 46 53 75 15 b4 41 bb aa 55 cd 13 72 0c 81 fb |TFSu..A..U..r...|

00000080 55 aa 75 06 f7 c1 01 00 75 03 e9 dd 00 1e 83 ec |U.u.....u.......|

00000090 18 68 1a 00 b4 48 8a 16 0e 00 8b f4 16 1f cd 13 |.h...H..........|

000000a0 9f 83 c4 18 9e 58 1f 72 e1 3b 06 0b 00 75 db a3 |.....X.r.;...u..|

000000b0 0f 00 c1 2e 0f 00 04 1e 5a 33 db b9 00 20 2b c8 |........Z3... +.|

000000c0 66 ff 06 11 00 03 16 0f 00 8e c2 ff 06 16 00 e8 |f...............|

000000d0 4b 00 2b c8 77 ef b8 00 bb cd 1a 66 23 c0 75 2d |K.+.w......f#.u-|

000000e0 66 81 fb 54 43 50 41 75 24 81 f9 02 01 72 1e 16 |f..TCPAu$....r..|

000000f0 68 07 bb 16 68 70 0e 16 68 09 00 66 53 66 53 66 |h...hp..h..fSfSf|

00000100 55 16 16 16 68 b8 01 66 61 0e 07 cd 1a 33 c0 bf |U...h..fa....3..|

00000110 28 10 b9 d8 0f fc f3 aa e9 5f 01 90 90 66 60 1e |(........_...f`.|

00000120 06 66 a1 11 00 66 03 06 1c 00 1e 66 68 00 00 00 |.f...f.....fh...|

00000130 00 66 50 06 53 68 01 00 68 10 00 b4 42 8a 16 0e |.fP.Sh..h...B...|

00000140 00 16 1f 8b f4 cd 13 66 59 5b 5a 66 59 66 59 1f |.......fY[ZfYfY.|

00000150 0f 82 16 00 66 ff 06 11 00 03 16 0f 00 8e c2 ff |....f...........|

00000160 0e 16 00 75 bc 07 1f 66 61 c3 a0 f8 01 e8 09 00 |...u...fa.......|

00000170 a0 fb 01 e8 03 00 f4 eb fd b4 01 8b f0 ac 3c 00 |..............<.|

00000180 74 09 b4 0e bb 07 00 cd 10 eb f2 c3 0d 0a 41 20 |t.............A |

00000190 64 69 73 6b 20 72 65 61 64 20 65 72 72 6f 72 20 |disk read error |

000001a0 6f 63 63 75 72 72 65 64 00 0d 0a 42 4f 4f 54 4d |occurred...BOOTM|

000001b0 47 52 20 69 73 20 6d 69 73 73 69 6e 67 00 0d 0a |GR is missing...|

000001c0 42 4f 4f 54 4d 47 52 20 69 73 20 63 6f 6d 70 72 |BOOTMGR is compr|

000001d0 65 73 73 65 64 00 0d 0a 50 72 65 73 73 20 43 74 |essed...Press Ct|

000001e0 72 6c 2b 41 6c 74 2b 44 65 6c 20 74 6f 20 72 65 |rl+Alt+Del to re|

000001f0 73 74 61 72 74 0d 0a 00 8c a9 be d6 00 00 55 aa |start.........U.|

00000200

Apr 19, 2015 3:37 PM in response to daniel20113

Assuming you have iMac and W7 (based on your signature), do you still have the original Windows installer (DVD, USB, or both)?


If you do, you can try,


1. Insert DVD or USB.

2. Go To System Preferences -> Startup Disk -> select Bootcamp -> click Restart.

3. It should boot from the Installer.

4. You should see a Repair option similar to the attached screen shots - https://imgur.com/a/1DaOE#0 (this is from my MBP).

A disk read error occurred on Bootcamp

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