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I had low disk space problem in windows 7 installation. And there was no way to increase the volume size of my C: drive. So I first backup the disks unix cat
command.
cat /dev/sdb1 > /media/tape8/sdb1_windows7.img
Then I repartitioned my hard disk. Give enough space (30GB) to windows drive (C:). After that I restore the image to the new 30GB partition by
cat /media/tape8/sdb1_windows7.img > /dev/sdb1
Now I try to boot windows. It doesn't boot. I try to repair by windows 7 installation disk. Tried Startup Repair, nothing changes.
My question is, on this scenario how do I boot my existing windows?
That is quite an unusual way to back up a disk - dd might have worked better, or to use some bootable disk repartitioning tool. – Journeyman Geek – 2011-12-17T09:57:34.310
Yeah, DD was better. But dd is way too slow. and selecting optimal bsize is the key here. But I could find the proper size. I did the cat. – Shiplu Mokaddim – 2011-12-17T12:28:24.900