Mounting confusion /proc comes to the rescue
If you are losing track of what’s mounted, and in what state? No problem, here comes /proc to the rescue:
This displays all mounted filesystems, the filesystem types, read/write status, and other attributes. How many hard drives are on the system? One of these will tell you and also, SCSI drives are sd, IDE are hd.
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Redhat Rescue Mode
Rescue mode provides the ability to boot a small Red Hat Enterprise Linux environment entirely from boot media or some other boot method instead of the system’s hard drive.
There may be times when you are unable to get Red Hat Enterprise Linux running completely enough to access files on your system’s hard drive. Using rescue mode, you can access the files stored on your system’s hard drive, even if you cannot actually run Red Hat Enterprise Linux from that hard drive. If you need to use rescue mode, try the following method:
Using the CD-ROM to boot an x86, AMD64, or Intel® EM64T system, type
at the installation boot prompt. Itanium users should type elilo linux rescue to enter rescue mode.
