Use diskpart or any other disk management / partition problem and set the partition with your OS in it to active. Something similar happened to me. I thought my partitions got corrupted at first, luckily I tried what I mentioned above.
Sounds like you may not need to play around with partitioning at all.So I have a 640gb sata HDD with a copy of vista running, however, I replaced the motherboard and I can no longer get into it. Is there some way to create a new partition on that 640gb HD for me to install a new OS without losing all the data I have on that HDD?
The problem is, is that the drive currently isn't partitioned. It is just a single 640gb partition with everything installed/stored on it. I wanted to know if I can partition it on the fly from a boot cd.
Sounds like you may not need to play around with partitioning at all.
Create an Ultimate Boot CD for Windows, boot from it and use the tool Fix_HDC to remove the HD controller, remove the CD and reboot.
Your drive is partitioned. It's just you have only one partition on it. Partition does sound like "to split". But in computing a "partition" is a segment of your HDD and that segment can be as large as the whole HDD. To "partition" doesn't necessarily mean to split the HDD into multiple segments. I can mean to create just one segment. You have to partition the HDD before you can use it because there are some data written at the beginning of the partition telling the program its type, size and other information I'm not familiar with. The problem you're facing now most likely is the partition isn't marked as active anymore.
Yeah. I didn't mention that because I haven't seen it actually work yet...but I'm told that it can.You can also boot from the Vista install CD and it should ask you if you want to repair the installation.
Yeah. I didn't mention that because I haven't seen it actually work yet...but I'm told that it can.You can also boot from the Vista install CD and it should ask you if you want to repair the installation.
Sounds like you may not need to play around with partitioning at all.
Create an Ultimate Boot CD for Windows, boot from it and use the tool Fix_HDC to remove the HD controller, remove the CD and reboot.