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An error occurred while accessing the Hard Disk, errno=14 / errno=35

APPLIES TO:
  • Parallels Desktop for Mac Home Edition
  • Parallels Desktop for Mac Pro Edition

Symptoms

While attempting to open a Windows program I get the following error message:

An error occurred while accessing the Hard Disk 0 used by "My Boot Camp".
The error ID: PRL_ERR_DISK_WRITE_FAILED (80021027), errno=14
(Bad address).

OR

An error occurred while accessing the Hard Disk 0 used by "My Boot Camp".
The error ID: PRL_ERR_DISK_READ_FAILED (80021029), errno=35
(Resource temporarily unavailable).

Resolution

Since El Capitan release all logs are stored in Mac operating memory.  To check the Mac disk for I/O errors presence it's required to use the following Terminal command on the Mac:

  1.  Launch Terminal ( Finder > Applications > Utilities > Terminal).
  2.  Execute the following command:
    sudo dmesg

NOTE: You will need to enter your Mac password to run the command. No symbols will be shown due to security measures, so just hit the keys and use return/Enter.

If the output of sudo dmesg command contains I/O error, as the example below,

disk2: I/O error.
CoreStorageGroup::completeIORequest - error 0xe00002ca detected for LVG "Macintosh HD" (D41ACF9D-27F1-44D4-A4D4-B3ACE45334CF), pv 3E833260-3241-4375-BB0F-972C27A3C457, near LV byte offset = 2024465223680.
disk2: I/O error.
CoreStorageGroup::completeIORequest - error 0xe00002ca detected for LVG "Macintosh HD" (D41ACF9D-27F1-44D4-A4D4-B3ACE45334CF), pv 3E833260-3241-4375-BB0F-972C27A3C457, near LV byte offset = 2024465223680.
disk2: I/O error.

It means that the disk could not be written or read -> This is critical error message. You may lose another pieces of the physical memory.

Please report this issue to Apple. Because no application can run on the damaged hardware.

It means your Virtual Machine is located on corrupted sectors of Macintosh HD and Mac OS X kernel cannot read its data from the drive.

We strongly recommend to show your Mac HD to Apple because bad sectors may indicate a hardware problem and are likely to reappear.

Note: the error message PRL_ERR_DISK_READ_FAILED may come with several different error codes. For the error PRL_ERR_DISK_READ_FAILED(80021029), errno=5 (Input / Output error), please use KB #112140

For OS X operating systems released before El Capitan to check input/output (I/O) disk errors use the following instructions to check system.log to find corresponding error messages.

Once this issue reproduced, first of all, please check your system.log for errors in the Console (Applications/Utilities/Console). Type "i/o" (without quotes) at Console's search bar

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NOTE: In case you found errors similar to:

    Jun 15 09:54:33 User-iMac kernel[0]: disk0s4: I/O error.
    Jun 15 09:54:52 User-iMac kernel[0]: disk0s4: I/O error.
    Jun 15 09:55:29 User-iMac kernel[0]: disk0s4: I/O error.
    Jun 15 09:56:07 User-iMac kernel[0]: disk0s4: I/O error.



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