Re: running OS from a rescue CD
- From: "David B." <mail@xxxxxxxxxx>
- Date: Fri, 17 Oct 2008 10:02:24 -0400
I agree that it doesn't belong in a corporate environment, but not with a blanket statement that it should never be done.
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"John7" <NoSp@xxxx> wrote in message news:48f89049$0$24401$5fc3050@xxxxxxxxxxxxxxxxxx
I do know better but not everybody is as tech savvy as you and I.
Under system administrators it is a general rule of thumb not to install OS's on raid0.
Most people make rarely backups or don't know how to backup / restore an OS.
Especially an OS restore can be difficult for less techy people.
Btw, this is no excuse for not making any backups!
Best practice is to avoid the risc. The gain is anyway limited.
Grtz,
John7
"David B." <mail@xxxxxxxxxx> schreef in bericht news:%23j55XfFMJHA.1736@xxxxxxxxxxxxxxxxxxxxxxxMaybe in your opinion, those of us that perform a regular backup routine have no problem running on a RAID 0, I do it on my gaming box.
Saying never ever is just you not knowing any better.
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"John7" <NoSp@xxxx> wrote in message news:48f87681$0$24395$5fc3050@xxxxxxxxxxxxxxxxxxHi Bill,
NEVER EVER install your OS on a raid0 (raid1 is very safe btw).
Resist the temptation for more speed as the risks / troubles are not worth it.
When either disk fails all data is lost (probably partly the case here).
Moving separate / both disk(s) to a healthy system will not work as all data
is evenly distributed on both disks and only readable with the same raid controller.
Any attempt to access on another system may ruine all data!
My advice ...
1. Leave the disks in your PC and DON'T swap the data cables.
2. DON'T break/reset the raid array in BIOS (will ruine all your data).
3. Prepare the Raid Driver floppy.
4. On a friend's PC, download and burn UBCD4Win (www.ubcd4win.com).
5. Set your bios to boot: 1st from CD, 2nd from raid0.
6. Boot from UBCD4Win CD.
7. Press F6 when asked.
8. Insert floppy and pick your raid controller, leave floppy inserted!
9. UBCD4Win loads Raid driver and you will be able to access your raid disk set.
10. Backup your import data to a external USB-stick/disk or network drive.
The latter requires Enable Network Support and Enable Drive Sharing.
11. I would not attempt to repair as OS on raid0 remains risky anyway.
12. If robustness is important to you, consider Raid1 (otherwise install OS on 1 disk).
Advantages: Here, both disk contain the same data, when either fails, the raid driver
reconstructs the contents automatically while the PC remains operational !
Moving one disk to another system allows full access to all data to salvage.
Disadvantages: 1x read speed (slightly increased), 1x write speed (slightly decreased),
2 disks provide space for 1 disk (ie. 2x 160GB in Raid1 --> 160GB).
When considering a complete reinstall and Raid1 ...
1. In Raid Bios break/reset the Raid0 array (all data is lost).
2. In PC Bios, disable Raid Controller temporarily.
3. Set PC Bios boot order to boot from floppy / CD before hard disk.
3. Boot from disk manufacturer's diagnostics on floppy / CD.
4. Full Zero-Fill a disk (may take hours, don't use quick zero fill)
5. Full Surface Check. a disk (may take hours, don't use quick check)
6. Repeat for other disk.
7. In PC Bios Enable Raid Controller.
8. Enter Raid Bios and setup Raid1 array, save and exit.
9. Run Windows install.
10. Press F6 when asked.
11. Use the earlier built Raid driver floppy.
Now, the procedure to setup Raid1 is similar to Raid0 setup.
HTH,
John7
"Bill" <frog@xxxxxxxxxxxxxxxxxxxxxx> schreef in bericht news:1EA9C892-08C5-421B-8937-E1EA9B334279@xxxxxxxxxxxxxxxxHi Leonard,
Just how "technically complicated"??
I've managed to install WinXP SP2 in the past, reformat and partition drive(s) and set up a RAID0 array - the set up currently on my dead PC. But that's the limit of my know-how. Are we talking of a level several leagues up the learning curve?
I'm wondering whether the RAID0 array on the 2 drives will complicate or indeed make it impossible to follow your suggestion of putting the drives into a 'good' PC and then recovering the data?
I remember having to load SATA drivers (the F6 floppy routine) at the very start of the OS installation but were they solely for the MoBo or were they in any way a requirement of the OS or hard drives?
Regards,
Bill
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