When you say "not recognized", do you mean that the drive does not show up under "My Computer" with a drive letter? Or that the OS does not even know the drive is there? It is possible that the SSD was formatted using an Ubuntu-specific file system that Windows does not recogize. In this case, the drive may be seen as "Not Activated". To check this in WIN 7, click on START, then right-click on COMPUTER and select MANAGE. When the Computer Management window appears, under STORAGE, select DISK MANAGEMENT. Wait for the window to populate, then scroll down looking for the SSD in the list. It should list a disk number, size, and status of the drive. If it is not ONLINE, then there is a problem. You will probably have to initialize it, partition it, and format it to have WIN 7 see it. Be advised however, that this will remove all data previously stored on it.
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When you say "not recognized", do you mean that the drive does not show up under "My Computer" with a drive letter? Or that the OS does not even know the drive is there? It is possible that the SSD was formatted using an Ubuntu-specific file system that Windows does not recogize. In this case, the drive may be seen as "Not Activated". To check this in WIN 7, click on START, then right-click on COMPUTER and select MANAGE. When the Computer Management window appears, under STORAGE, select DISK MANAGEMENT. Wait for the window to populate, then scroll down looking for the SSD in the list. It should list a disk number, size, and status of the drive. If it is not ONLINE, then there is a problem. You will probably have to initialize it, partition it, and format it to have WIN 7 see it. Be advised however, that this will remove all data previously stored on it.