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Q.That sounds like you have two windows installations and not just one as suggested by the mentioned dual boot structure above.
A. /dev/sda1 is a manufacturer Vista recovery partition, and Windows 7 booting from it causes Windows 7 error message. Windows 7 boot partition is /dev/sda2, but its entry ...

Hello, guys. I lost access to the hard drive of my Acer Aspire 5715z laptop due to Calculate Linux Mate 18.12 (cldm-18.12) faulty installation. I have Windows 7 - Ubuntu dual boot on it. sudo fdisk /dev/sda -l output shows the partitions of the hard drive:
Disk /dev/sda: 160.0 GB, 160041885696 bytes ...

I ran boot-repair program provided by Ubuntu. Here is an extract from its results:

sda2: __________________________________________________________________________

File system: ntfs
Boot sector type: Windows Vista: NTFS
Boot sector info: According to the info in the boot sector, sda2 starts ...

I checked Vista (ACER) partition with TestDisk if there were a problem with Vista boot sectors. There were: Boot sector: OK Backup Boot sector: bad. TestDisk, Options, Align partitions, No, Advanced, ACER, Boot, [OrgBS], reboot. Anyway, when booting Vista (with Grub boot loader) I get the same disk ...

Your procedure has successfully restored the hard disk partition structure. I reinstalled Grub boot loader. Ubuntu Linux and Windows Recovery Environment (PQSERVICE) partitions get loaded normally. Later, Windows Recovery Environment (PQSERVICE) partition gives an error message ' Error Restore ...

Hello,
I lost access to the hard disk of my Acer Aspire 5715z laptop. I have Vista - Ubuntu dual boot on it. The recent Gentoo incompleted installation did not cause any problem. Later Vista stopped get loaded by Grub. I tried to repair this problem with boot-repair software available in Ubuntu and ...