Re: UNMOUNTABLE-BOOT-VOLUME
It could be a hard drive failure that is telling you to replace the drive asap, since the drive is cleary not reliable and should be replaced or else you will lose important data that you want to save.
Re: UNMOUNTABLE-BOOT-VOLUME
The error gives rise to severe data loss situations. Therefore, to recover the lost data you should use an efficient and reliable third party software and go for XP data recovery download. It would efficiently recover all the lost data without losing any. It is compatible with all versions of Windows.