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

APPLIES TO:
  • Parallels Desktop for Mac Standard 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

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 an 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.

It means that the disk could not be written or read -> This is critical error message. You may lost 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.

If no errors found in the Console, please proceed with the instructions below:

  1. Launch Parallels Desktop but do not start your virtual machine yet.

  2. Go to your virtual machine Configuration > Hardware tab > Boot Order.

  3. Insert the following string into the "Boot flags" field:

    devices.hdd.error=1
    
  4. Start your virtual machine and check the issue.

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




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