hard drive showing -1 Mb

By shortstuff ·
Hi guys, I have a PC that failes to boot and just goes around in circles. I've tried safe mode, last know good configurtion etc and nothing works. I'm not getting any error messages as such so I decide to boot with ultimate boot cd 4 windows. That shows me the drive size is -1 Mb on the active partiton.
I ran a diagnostic program over it checking for bad blocks etc and that came up clean.
I cant run chkdsk because it doesnt recognise the partition.
If I run testdisk on it I can access the files so thats something. Does this sound like a corrupted MBR or can anyone point me to fixing the drive/partiton structure?
Even tho I can transfer the data using testdisk it is a slow process, so hopefully whatever I do Id like to keep the data intact.
many thanks

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Back up your data first

by seanferd In reply to hard drive showing -1 Mb

No matter what you do, pull off the data you want. You may not be able to safely fix the partition. The partition or partition table is corrupted.

What operating system are you using?

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Yes I do agree Backup your Data first

by OH Smeg Moderator In reply to hard drive showing -1 Mb

Then use the Ultimate Boot CD available here


and test your HDD with it's makers Testing Utility to rule out any Hardware issues first. Slow Data Transfer from a HDD is a sign of it failing.


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What is the Make and Model

by Jacky Howe In reply to hard drive showing -1 Mb

of this PC. Was there a reference to any other Partitions.

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