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Topic: Slave (Read 96 times)
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Nittany
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Slave
« on: May 21, 2004, 03:17:29 PM »
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I formatted my slave drive. My question is, if I put stuff back on it and format my master, will everything on my slave work fine after the OS is reinstalled on the master?
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Porter
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Re:Slave
« Reply #1 on: May 21, 2004, 03:56:20 PM »
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Yep. That's the big benefit to using multiple volumes like that. In fact, if you split a single HD into two partitions, you can format one and leave the other intact, ready and waiting for after you reinstall the OS. It's actually a really good idea to do this.
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| « Last Edit: May 21, 2004, 04:03:57 PM by Porter » |
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[Wumpa] Porter
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Nittany
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Re:Slave
« Reply #2 on: May 21, 2004, 03:59:53 PM »
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Sweet, thanks Porter.
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Porter
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Re:Slave
« Reply #3 on: May 21, 2004, 04:05:20 PM »
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Actually though, if you have separate drives, it's a LOT safer to actually unplug the one with your data before you install the operating system. This help prevent you from accidentally formatting the one with all your stuff instead of the one you want to reinstall to. 
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[Wumpa] Porter
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Guardian_Tenshi
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Re:Slave
« Reply #4 on: May 21, 2004, 06:41:11 PM »
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I have a similar line of questioning...i have a harddrive in one computer that is fully operational and bootable, remove the harddrive and shove it into another computer, will it boot?
Tenshi
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Re:Slave
« Reply #5 on: May 21, 2004, 06:56:28 PM »
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Probably not. If it's a Windows OS, then it's using drivers specific to the motherboard/CPU/chipset of the machine it was FIRST installed on. When Windows tries to boot itself using drivers for a board that ISN'T the one it's expecting (because the drive is now in a different machine), it usually BSOD's during startup. I've seen this about a half dozen times in the past 2 years, and as recently as 3 days ago when I tried to boot my Shuttle from Yu^rei's old Win2k drive. There's no way to fix this, because even Safe Mode relies on these low-level drivers to function. One of the huge downsides to Windows.
A Mac on the other hand, can boot from any drive that has any version of Mac OS installed. I could book my iBook off the drive in my G4 by making my G4 into a huge external FireWire drive. Then the whole system on the laptop would literally be running from the G4's internal drive. Neat stuff.
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[Wumpa] Porter
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slightcrazed
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Re:Slave
« Reply #6 on: May 22, 2004, 08:35:31 AM »
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Same thing with linux.... The default slackware kernel comes with compiled in support for just about every chipset/controller combination known to man, so I could very easily take the HD out of my system, throw it in someone elses, and get the thing to boot. I would have to screw around with some setting to get the NIC up and running again, and I probably wouldn't be able to boot directly into X without making sure I have the right vid card drivers, but other than that it should work fine. :-)
God how I love a well thought out OS.
slight
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Nubbinator
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Re:Slave
« Reply #7 on: May 22, 2004, 09:29:32 AM »
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Actually Porter, I gotta say that most of the time you are able to boot from another systems HDD when using Windows. Certain conditions do apply though. If you are going from an Asus board to an MSI board, you may have problems. As long as they system isn't radically different (Shuttle to tower) then you shouldn't have much problems.
I can say this with certainty cuz I get people to do it at least 10 times a day and never have much problems (except for finding out how to get the case open). So to recap - Similar hardware = good, totally different hardware = screwed.
Now I'll get a bit more technical for Porter and whoever else can understand  When windows first loads it runs the NTLDR which in turn runs ntdetect.exe. This program checks for computer ID, bus/adapter type, SCSI, Video cards, keyboards, com ports, parrallel ports, floppy disks, mice and floating point co-processor. This is also the part that you can enter safe mode. Next the kernal starts to load, and once its done making backups of registry settings, and creating new ones, it starts the rest of the drivers, including the actual chipset. After thats done, its alt+ctrl+del time baby! Nothing but login.
I can see why a shuttle would give problems as no doubt most of its legacy interface would be very different. Its almost like trying to boot a laptop off a towers HDD.
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slightcrazed
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Re:Slave
« Reply #8 on: May 22, 2004, 09:54:20 AM »
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Actually, that's not the main problem...... Yes, Windows WILL try to autodetect the hardware at startup, but that is not the issue. If the system HAL is different then the Windows kernel will not even load, meaning that you will never get to a point where high level driver autodetection works. You may have some cases where a similar HAL allows you to shift drives between systems, but for the most part this will NOT work at all. Ntdetect.exe is an executable, and relys on a working executable environment. This means that the kernel must first load and function correctly (that is the job of NTLDR as you mentioned), allowing memory access and such. This is where the windows kernel will most likely fail, and you'll get the friendly BSOD.
slight
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Nubbinator
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Re:Slave
« Reply #9 on: May 22, 2004, 11:45:19 AM »
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Bleh... took me an hour to even read that. Too busy today for a saterday.
http://windows.about.com/library/weekly/aa000716a.htm
Check this out Slight. I'm thinking it fails during stage 2.
For non-techs
HAL - Hardware Abstraction Layer defined:
" A thin layer of software provided by the Hardware Manufacturer that hides, or abstracts, Hardware differences from higher layers of the Operating System [Windows]. By means of the filter provided by the HAL, different types of Hardware look alike to the rest of the Operating System. This allows the Operating System to be portable from one Hardware Platform to another. The HAL also provides routines that allow a single Device Driver to support the same Device on all Platforms."
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Porter
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Re:Slave
« Reply #10 on: May 23, 2004, 11:11:27 PM »
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All I can say is that I've seen perfectly good Windows installations fail to boot on ANY hardware, regardless of how "similar" they boxes were time and time again, while I have Mac OS systems that were installed circa 1998 and still boot any Mac I put the drive in. Heck FreeBSD even does this without breaking a sweat! From a AMD K6-II 500MHz to a AMD Duron 800 to an Intel Pentium 1 133MHz-- the same hard drive will boot every single system, all with radically different hardware (obviously), and even load support for ALL the hardware on the first boot.
Windows has been around what, ten years? and still can't get this concept down pat with that kind of level of reliability. Why? Their install CDs can do it without a problem, so why is Windows itself so crippled?
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[Wumpa] Porter
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Fotty
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Re:Slave
« Reply #11 on: May 25, 2004, 03:47:10 PM »
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maybe you did something wrong.. i have never had that sort of problem porter
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Nittany
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Re:Slave
« Reply #12 on: May 25, 2004, 04:24:37 PM »
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Hmm, I've seen it happen twice. If you use different motherboards the harddrives usually won't just swap.
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Guardian_Tenshi
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Re:Slave
« Reply #13 on: May 25, 2004, 11:31:22 PM »
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So after all that, I'll take the answer as "experiment at my own risk" 
Tenshi
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