The DISM and SFC tools scan the integrity of the Windows image. I boot a working guest and mount the same XYZ. File Checker (SFC) tools as Administrator. I put the same XYZ.iso in a working guest's CD drive in Virtualbox's settings window while the guest is shut down, then I boot the guest, and this happens: Please do let us know if you need any further assistance, we will be glad to assist you. Click Search, and type 'disk management' in the search box and select 'Disk Management' in the list. 10 GB in size and include only data, not free space. Click on Share tab from the top of the File Menu in File Explorer. Press the Windows key and R key simultaneously to open the Run window, type 'Diskmgmt.msc' in the empty box and press Enter key (or tap OK). If the disk image will be used with a Mac or Windows computer and is 32 GB or. I put XYZ.iso in a new guest's CD drive in Virtualbox's settings window, then I boot the guest, and this happens: Step 2: Please try the following steps and check if it works. Search for Device Manager and click the top result to open the app. Try to start a guest with the new ISO (I find that booting with a non-bootable ISO merely gives the No Bootable Medium error, Virtualbox seems to attempt to use the ISO.) If the guest at least gets to the No Bootable Medium error, than your Virtualbox should be able to boot from ISOs and your other ISO's may be bad.Īlso, on one of your non-working XYZ.iso's give some data like this. If the DISM command is unable to restore Windows image directly, you can mount the Windows 10 ISO and point the command to use the install.wim file or install.esd file. To enable a hard drive using Device Manager on Windows 10, use these steps: Open Start. Becca: It is possible that a file that did work once can get corrupted later.įor the green guys: Is the Boot-from-ISO requirements in Virtualbox different from the Mount-in-a-guest requirements? if not, then a guest which can accept and mount an ISO ought to be able to boot from it.īack to Becca: As a test, try downloading some ISO or other from a worthy site, especially if you can get a md5 or SHA hash on the site, too, then run a hash on your download to confirm. Solution 1: Change the Default Program from Context Menu.
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