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What happens if I reinstall OS? Will all the viruses get killed also?

Install OSX Lion on a RAID formatted drive but get all Lion's features? Reinstall without Snow Leopard DVD?

  • Lion upgrade for Macbook Pro but my laptop is RAID formatted - how can I upgrade to Lion, keep my documents/music/applications, and get the full features of Lion (which I can't do with a RAID formatted drive)? Am I doomed to format and do a clean install? Can I without the Snow Leopard DVD? I bought my macbook pro laptop on Craigslist, the second most recent generation (non-thunderbold model). I purchased and downloaded Lion upgrade but when I began the install I get this error message: "Some features of Mac OS X Lion are not supported for the disk (volume name)". http://support.apple.com/kb/HT4649. It explains that this happens in two situations, mine is "The disk you are installing Lion on is a RAID volume". Their solution is: "Make a full backup of your hard disk and all of its data (including your Boot Camp partition, which is not normally backed up by Time Machine), then erase your hard disk and create a single Mac OS Extended (Journaled) partition. Reinstall Mac OS X v10.6 Snow Leopard, then re-download the OS X Lion installer from the Mac App Store and retry your install." I've http://macs.about.com/od/macoperatingsystems/qt/Install-Lion-Using-A-Bootable-Dvd.htm but can I do a full clean install with that alone or do I need the Snow Leopard DVD ... which I don't have so I'd need a replacement disk from Apple which is apparently not too expensive (do you know how much?)? Any other ideas or solutions to convert the file system of the drive without a full reinstall?

  • Answer:

    A Snow Leopard DVD was around $29, last time I bought one. No idea if Apple still sells them, but resellers surely will.

unclezeb at Ask.Metafilter.Com Visit the source

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You can make a bootable DVD or Hard Drive using Disk Utility and the Lion Installer that you download from the App Store. MacWorld had a simple http://www.macworld.com/article/161069/2011/07/make_a_bootable_lion_installer.html that I used without issue. Upon actually reading your question... yes, you can do a fresh install from a lion boot disk. =)

mmdei

I'm confused about how you managed to get a RAID volume into a laptop. Do you have a second drive where the optical drive should be?

b1tr0t

I've created a bootable DVD of Lion but can I do a full clean install with that alone Yes. I know because I've done it myself. Just boot off the disc, and away you go. Just to note a weird issue that I had - my installation of Lion failed halfway through (for unknown reasons) and subsequent attempts were flatly refused. However, once I tried reseting the PRAM, it worked fine. Just throwing that out there.

Magnakai

the only features of Lion you wouldn't get with an in-place upgrade are full-disk encryption and the recovery boot partition. the recovery partition is essentially equivalent to having a hidden copy of the DVD you've burnt installed on the hard drive - if you keep the DVD then you don't ned the recovery partition. so if you don't need/want full-disk encryption, and you keep that DVD safe, then you may as well just do an upgrade in place.

russm

Rusam, I'm pretty sure that's not true. I upgraded from Snow Leopard on one computer, and both now have the recovery partition. I can also apply full-disk encryption whenever I want to, on either computer.

Magnakai

Magnakai - the "you" I meant was specifically the OP in this thread, who has a 10.6 install on Apple RAID and hence the 10.7 installer can't repartition (as noted in the http://support.apple.com/kb/HT4649 OP linked). so yes, in general the in-place upgrade works fine, including repartitioning to add the recovery volume. just not in this case.

russm

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