Toinen kovalevy katosi järjestelmästä???

dynaamisen kiintolevyn muuttaminen basic-levyksi:

Löysin tällaista tietoa Microsoftin sivuilta:
(huom! teet homman omalla vastuullasi)

"How to Convert a Dynamic Disk to a Basic Disk
To change a dynamic disk back to a basic disk:

1. Back up all the data on all the volumes on the disk you want to convert to a basic disk.
2. Log on as Administrator or as a member of the Administrators group.
3. Click Start, and then click Control Panel.
4. Click Performance and Maintenance, click Administrative Tools, and then double-click Computer Management.
5. In the left pane, click Disk Management.
6. Right-click a volume on the dynamic disk that you want to change to a basic disk, and then click Delete Volume.
7. Click Yes when you are prompted to delete the volume.
8. Repeat steps 4 and 5 for each volume on the dynamic disk.
9. After you have deleted all the volumes on the dynamic disk, right-click the dynamic disk that you want to change to a basic disk, and then click Convert to Basic Disk."

Lisätietoja googlella: "dynamic disk to basic disk" tms.
Kannattais myös testata ongelmakiintolevy jollakin erityissoftalla. Saattaahan se olla hajonnut tai hajoamassa.