Hard Disk mounting

Hard Disk mounting-general Linux technology-Linux technology and application information. For details, refer to the following section. My system was originally a dual-system of xp and linux. After I re-installed xp, I couldn't enter linux. After the boot of my installation disk, I changed grub and can access it, however, the problem is that, apart from the linux hard disk, it can be identified as a file system, while other hard disks cannot be identified (the other three disk partitions are ntfs-type, one is a C drive, that is, a windows installation disk, and the other two are hard drive partitions d and e). After one day of processing, I still cannot mount the disk. My practice is as follows, please help us solve the problem:
At the beginning, I thought it was a mess of UUID. I changed the UUID under fstab and found that the UUID of drive C had changed, so I changed the UUID of drive C. Then, you still cannot see the C, D, and E disks, and then mount-a. The prompt is as follows:
Mount: according to mtab,/dev/sda1 is already mounted on/media/windows

Mount: according to mtab,/dev/sda5 is already mounted on/media/win_d

Mount: according to mtab,/dev/sda6 is already mounted on/media/win_e
In fact, the content of the three disks "/media/windows/media/win_d/media/win_e" cannot be seen at all. The contents in their directories are empty.
My fstab is as follows:
#/Etc/fstab: static file system information.
#
#
Proc/proc defaults 0 0
#/Dev/sda8
UUID = e9ff3644-7463-4561-90c1-60b27baeef08/ext3 defaults, errors = remount-ro 0 0

#/Dev/hdc1
# UUID = 5668A30568A2E2CB/media/extra ntfs defaults, umask = 007, gid = 46 0 0
#/Dev/hdc1/media/extra ntfs defaults, umask = 007, gid = 46 0 0

#/Dev/sda1
UUID = 827CE27D7CE26AFD/media/windows ntfs defaults, umask = 000gid = 46 0
#/Dev/sda1/media/windows ntfs ults, umask = 007 gid = 46 0 0

#/Dev/sda5
UUID = 03DAEF6EBB610190/media/win_d ntfs defaults, umask = 007, gid = 46 0 0
#/Dev/sda5/media/win_d ntfs ults, umask = 007, gid = 46 0 0

#/Dev/sda6
UUID = 29A8921084C79271/media/win_e ntfs defaults, umask = 007, gid = 46 0 0
#/Dev/sda6 // media/win_e ntfs ults, umask = 007, gid = 46 0 0

#/Dev/sda7
UUID = a9def9f8-32ea-40cb-ad1d-e6d4a32fb02c none swap sw 0 0
/Dev/hda/media/cdrom0 udf, iso9660 user, noauto, exec 0 0


Which of the following prawns can help me solve the problem, post a message, or contact my QQ542769085?
Thank you!