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Hard disk should be detected automatically by the system.
What kind of hdd it is? PATA? SATA? or SCSI? Did you check the jumper settings on the disk if it is an old one? Did you check the connectivity of hdd to motherboard like power cable and data bus. On which port you are connecting this hdd?
Jumper settings will depend on the manufacturer. You can check that on hdd manufacturer's site how the jumper should be set. I don't think so that scanning will help because if has something to do with scan then the reboot should have detected it. But as you said that you rebooted it quite a few times so I doubt that system is even aware about the drive.
Are you able to see the newly connected disk in your BIOS? If yes, then we can think on scanning part. If not, then there is a connectivity issue.
hwinfo command is not available on RHEL but it is there on SLES and openSuSE. Not sure about other distributions.
T3RM1NVTOR.... You're Good!
I am running All SuSE and openSuSE 10x to 12.1...
working on first centos (RHEL) right now. want to replace hardware router with linux router.
linuxandtsm, if you can't see the hdd (hard disk drive) in BIOS, then the disk is either bad or is not installed right.
Is it on the same chain / channel as the other hdd or a cd / dvd?
..or is it on it's own channel (ribbon cable)?
If it is the second disk hdd or cd on a ribbon cable, is the jumpers set to SL (slave) Mx (master, sometimes, MS, MA, M, MT, MR) or CS (cable select)..
If the fist hdd is set to CS, they both must be capable of CS. Some older drives are not.
If the 1st is set to Single that is the same as mastern no slave present.
None of this means anything if your drives are SATA (Serial ATA) or real SCSI (scuzzy), but then they would not be on the same channel unless they are both SCSI..
ps. each HDD manufacture has it's support page for jumper settings.
Here is an example of Jumper Settings
I find that cable select is a hit and miss (does not always work) thing and don't use in
hope this helps.. I'll be around, work from home 20x7..
back to an earlier question asked, does your BIOS see the drive during boot?
access BIOS setup: Esc, Del, F1, F2, F10, IBM Enter then menu F1..
you'll have to watch during the first few seconds of 'boot up', before OS (operating system) starts to load..