OS media type unknown

Ditto! Can't install  

Did anyone get a resolution to this???

Hi folks! Another customer recently brought this thread to my attention. Since it was not posted in the Image Assist forum, none of the Image Assist community subscribers nor moderators were notified.

This issue can occur if you build the VM using the Quick Create... option in Hyper-V. For instructions on using Hyper-V with Image Assist, reference the following article. Using Hyper-V with Image Assist Dynamic

Depending on your situation, you may have to use an appropriate solution for the disk not initialized issue on your computer, be it a local hard drive or an external hard drive.

To fix a disk from turning into not initialized in such a case, you can initialize the disk directly. Then comes the question - does initializing a disk erase data? Actually, initializing a disk will rebuild the master boot record. It WON'T ERASE the data on the disk. However, to make the disk usable again, you need to further partition and format the disk, which will erase the files on your hard drive. Thus, to fix the disk not initialized, you need to:

Initialize the hard drive
Recover data from the disk and create new volumes
Partition and format the disk to make it ready for data storage
Solution 1. Initialize Disk
Applies to: Fix disk is not initialized and shows unallocated.

This is the easiest way to fix the disk unknown not initialized issue. This also works to initialize a brand new hard drive.

Step 1. Right-click "My Computer" > "Manage" to run Disk Management.

Step 2. Here, right-click the hard drive and click "Initialize Disk".

Step 3. In the dialogue box, select the disk(s) to initialize and choose MBR or GPT partition style.

Initialize the hard drive to fix disk unknown not initialized error

After initializing the disk, you can now recover data from your disk. Based on your needs, you can recover data only from the disk or recover both the partitions and the files.

Solution 2. Recover Data from Hard Drive and Create New Volumes
Applies to: Fix disk is not initialized and shows unallocated.

Here, if you have important files on the external hard drive, you can try the hard drive recovery software - EaseUS Data Recovery Wizard to recover the files from the inaccessible disk.

This powerful data recovery software can restore files from disks in different states, including recover data from dead hard drive.

Download for Win
 Recovery Rate 99.7%
Download for Mac
 Trustpilot Rating 4.6
Step 1. Select and scan the lost partition

Launch EaseUS Data Recovery Wizard, select "Lost Partition" and click "Scan" to search for all the lost data. If there are many lost partitions, you can identify them through its partition size.

Note: Since the Windows system doesn't support the Linux file system, the Ext2 or Ext3 partition will be recognized as lost partition with no drive letter in the software. If you want to recover data from Ext2/Ext3 partition, you can follow these steps.

select the lost partition to scan
Step 2. Filter the scanned results

Because there will be a lot of scanned files, you can choose a file category for quick filtering, such as Pictures, Videos, Documents, Audio, and Others. Or if you remember the file name, you can just look it up in the search box in the upper right corner.

check all found files
Step 3. Preview and recover data from the lost partition

Before recovery, you can preview the file to make sure it is the data you need. Choose all the files you need and click "Recover" to restore them.

recover files from lost partition
If you only recover data, you must partition the disk by yourself following the steps below.

Step 1. Right-click "This PC" and choose "Manage" > "Disk Management".

Step 2. Right-click the unallocated space and choose "New Simple Volume..."

Step 3. In New Simple Volume Wizard, click "Next" to continue.

Step 4. Follow the wizard to specify the volume size, assign a drive letter to the volume, and then format the partition.

Disk Not Initialized - Partition the disk

If you don't want to create partitions by yourself, you can recover partitions on your disk that shows "Not Initialized", which will help you restore the original partitions on the hard drive.

This may help you,

Rachel Gomez