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Groups > comp.sys.mac.system > #98531 > unrolled thread
| Started by | Patty Winter <patty1@wintertime.com> |
|---|---|
| First post | 2017-01-11 19:58 +0000 |
| Last post | 2017-01-12 19:29 +0100 |
| Articles | 20 on this page of 37 — 13 participants |
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Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-11 19:58 +0000
Re: Best version of OS X for an older iMac? Davoud <star@sky.net> - 2017-01-11 15:11 -0500
Re: Best version of OS X for an older iMac? nospam <nospam@nospam.invalid> - 2017-01-11 15:15 -0500
Re: Best version of OS X for an older iMac? Bruce Esquibel <bje@ripco.com> - 2017-01-12 11:36 +0000
Re: Best version of OS X for an older iMac? nmassello@yahoo.com (Neill Massello) - 2017-01-12 05:11 -0700
Re: Best version of OS X for an older iMac? nospam <nospam@nospam.invalid> - 2017-01-12 10:16 -0500
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-13 11:06 +1300
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 04:48 +0000
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-14 00:06 +1300
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 16:50 +0000
Re: Best version of OS X for an older iMac? nospam <nospam@nospam.invalid> - 2017-01-13 11:58 -0500
Re: Best version of OS X for an older iMac? Jolly Roger <jollyroger@pobox.com> - 2017-01-13 16:59 +0000
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 18:12 +0000
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-14 10:06 +1300
Re: Best version of OS X for an older iMac? Jolly Roger <jollyroger@pobox.com> - 2017-01-14 01:12 +0000
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-16 20:38 +0000
Re: Best version of OS X for an older iMac? Jolly Roger <jollyroger@pobox.com> - 2017-01-16 21:55 +0000
Re: Best version of OS X for an older iMac? Alan Browne <alan.browne@freelunchvideotron.ca> - 2017-01-16 17:29 -0500
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-17 12:18 +1300
Re: Best version of OS X for an older iMac? John Albert <j.albert@snet.net> - 2017-01-16 23:25 -0500
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-17 18:25 +1300
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-02-04 21:30 +0000
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-02-06 14:04 +1300
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-17 05:55 +0000
Re: Best version of OS X for an older iMac? dorayme <do_ray_me@bigpond.com> - 2017-01-14 11:35 +1100
Re: Best version of OS X for an older iMac? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-01-12 22:05 +0000
Re: Best version of OS X for an older iMac? Jolly Roger <jollyroger@pobox.com> - 2017-01-11 21:14 +0000
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 05:13 +0000
Re: Best version of OS X for an older iMac? dorayme <do_ray_me@bigpond.com> - 2017-01-13 18:31 +1100
Re: Best version of OS X for an older iMac? Jolly Roger <jollyroger@pobox.com> - 2017-01-13 15:15 +0000
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 18:11 +0000
Re: Best version of OS X for an older iMac? dempson@actrix.gen.nz (David Empson) - 2017-01-14 10:06 +1300
Re: Best version of OS X for an older iMac? Patty Winter <patty1@wintertime.com> - 2017-01-13 23:43 +0000
Re: Best version of OS X for an older iMac? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2017-01-12 05:32 +0000
Re: Best version of OS X for an older iMac? android <here@there.was> - 2017-01-12 08:40 +0100
Re: Best version of OS X for an older iMac? Fred McKenzie <fmmck@aol.com> - 2017-01-12 11:19 -0500
Re: Best version of OS X for an older iMac? android <here@there.was> - 2017-01-12 19:29 +0100
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| From | Patty Winter <patty1@wintertime.com> |
|---|---|
| Date | 2017-01-11 19:58 +0000 |
| Subject | Best version of OS X for an older iMac? |
| Message-ID | <o562pd$2kq$1@dont-email.me> |
This is long-range planning, but what version of OS X could I reasonably expect to run on a mid-2011 iMac? Here are the specs on it: PROCESSOR 065-0248 2.7GHz Quad-Core Intel Core i5 MEMORY 065-0251 4GB 1333MHz DDR3 SDRAM - 2x2GB HARD DRIVE 065-0255 1TB Serial ATA Drive GRAPHICS 065-8998 AMD RadeonHD 6770M 512MB GDDR5 I'm currently running 10.6.8 and won't upgrade until I'm confident that I've satisfactorily replaced all the Rosetta apps I currently use. I don't care if I can't take the iMac up to 10.12; I have my MacBook to handle anything that needs the latest OS. I'm concerned that OS X might have kept getting bigger and more processor-intensive and thus there might be a sweet spot with a version that has the post-10.6 framework but will run better than the latest versions. Or maybe I'm wrong and the latest versions are lean and will run fine on an older iMac. Looking for guidance on that. FYI, I have Lion available. I got it (free) just after I got the iMac. Patty
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| From | Davoud <star@sky.net> |
|---|---|
| Date | 2017-01-11 15:11 -0500 |
| Message-ID | <110120171511434266%star@sky.net> |
| In reply to | #98531 |
Patty Winter: > This is long-range planning, but what version of OS X could I > reasonably expect to run on a mid-2011 iMac? Here are the specs > on it: I don't know about "best," but my wife is running the latest Sierra, 10.12.2, on her mid-2011 iMac. Works like a charm. I'm running the latest Sierra on a mid-2010 17" MBPro. Also works great. -- I agree with almost everything that you have said and almost everything that you will say in your entire life. usenet *at* davidillig dawt cawm
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2017-01-11 15:15 -0500 |
| Message-ID | <110120171515464620%nospam@nospam.invalid> |
| In reply to | #98531 |
In article <o562pd$2kq$1@dont-email.me>, Patty Winter <patty1@wintertime.com> wrote: > This is long-range planning, but what version of OS X could I > reasonably expect to run on a mid-2011 iMac? sierra
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| From | Bruce Esquibel <bje@ripco.com> |
|---|---|
| Date | 2017-01-12 11:36 +0000 |
| Message-ID | <o57por$s7j$1@remote5bge0.ripco.com> |
| In reply to | #98533 |
nospam <nospam@nospam.invalid> wrote: > sierra Great answer but for her isn't it a two step process? She has to get El Capitan installed, then sierra? I don't think you can go from 10.6.8 to sierra directly. So her only choices are El Capitan or Sierra anyway, unless she downloaded the others (Mavericks, Yosemite) previously, they wouldn't be available from the app store anyway. -bruce bje@ripco.com
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| From | nmassello@yahoo.com (Neill Massello) |
|---|---|
| Date | 2017-01-12 05:11 -0700 |
| Message-ID | <1mzq35a.lu9jiy1v0i59lN%nmassello@yahoo.com> |
| In reply to | #98549 |
Bruce Esquibel <bje@ripco.com> wrote: > Great answer but for her isn't it a two step process? > > She has to get El Capitan installed, then sierra? > > I don't think you can go from 10.6.8 to sierra directly. > > So her only choices are El Capitan or Sierra anyway, unless she downloaded > the others (Mavericks, Yosemite) previously, they wouldn't be available from > the app store anyway. Yes, according to the General Requirements, Sierra requires 10.7.5 or later. <http://www.apple.com/macos/how-to-upgrade/> She should see what shows up as available in App Store. It might be neceessary for her to call Apple.
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2017-01-12 10:16 -0500 |
| Message-ID | <120120171016571279%nospam@nospam.invalid> |
| In reply to | #98549 |
In article <o57por$s7j$1@remote5bge0.ripco.com>, Bruce Esquibel <bje@ripco.com> wrote: > > > sierra > > Great answer but for her isn't it a two step process? depends what you call two step. > She has to get El Capitan installed, then sierra? > > I don't think you can go from 10.6.8 to sierra directly. apple states that for an upgrade, lion or later is required, but that's not the only way. another option is make a sierra usb installer and install directly. it even works on a blank hard drive, which may actually be required in this case. i'm not sure what the sierra installer will do on a 10.6 install. > So her only choices are El Capitan or Sierra anyway, unless she downloaded > the others (Mavericks, Yosemite) previously, they wouldn't be available from > the app store anyway. lion and mountain lion are still available for purchase. mavericks, yosemite & el capitan are no longer available unless previously downloaded.
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| From | dempson@actrix.gen.nz (David Empson) |
|---|---|
| Date | 2017-01-13 11:06 +1300 |
| Message-ID | <1mzsbbk.1m88y4h1qzd853N%dempson@actrix.gen.nz> |
| In reply to | #98553 |
nospam <nospam@nospam.invalid> wrote: > In article <o57por$s7j$1@remote5bge0.ripco.com>, Bruce Esquibel > <bje@ripco.com> wrote: > > > > > > sierra > > > > Great answer but for her isn't it a two step process? > > depends what you call two step. Upgrading a 10.6 system to 10.12 requires upgrading to an intermediate version, then to 10.12. That sounds like two steps to me. > > She has to get El Capitan installed, then sierra? > > > > I don't think you can go from 10.6.8 to sierra directly. > > apple states that for an upgrade, lion or later is required, but that's > not the only way. > > another option is make a sierra usb installer and install directly. it > even works on a blank hard drive, which may actually be required in > this case. i'm not sure what the sierra installer will do on a 10.6 > install. Attempting to install Sierra on top of an existing 10.6 system will fail. The installer only has support code for upgrading a 10.7 or later system. Similar for Lion through El Capitan: they could not be installed on top of an existing 10.5 or earlier system, only a drive with no system, or one containing 10.6 or later. The cutoffs are different for migration: 10.7 could migrate from 10.4 or later, 10.8 from 10.5 or later, and 10.9-10.11 could migrate from 10.6 or later. I haven't checked whether 10.12 can migrate from 10.6 but it wouldn't surprise me if this also requires 10.7 or later. > > So her only choices are El Capitan or Sierra anyway, unless she downloaded > > the others (Mavericks, Yosemite) previously, they wouldn't be available from > > the app store anyway. > > lion and mountain lion are still available for purchase. But pointless wasting the money because El Capitan is free. > mavericks, yosemite & el capitan are no longer available unless > previously downloaded. El Capitan is still available. Apple has a support article providing a link to get it from App Store. https://support.apple.com/HT206886 -- David Empson dempson@actrix.gen.nz
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| From | Patty Winter <patty1@wintertime.com> |
|---|---|
| Date | 2017-01-13 04:48 +0000 |
| Message-ID | <o59m6v$pvg$1@dont-email.me> |
| In reply to | #98571 |
In article <1mzsbbk.1m88y4h1qzd853N%dempson@actrix.gen.nz>, David Empson <dempson@actrix.gen.nz> wrote: > >Upgrading a 10.6 system to 10.12 requires upgrading to an intermediate >version, then to 10.12. That sounds like two steps to me. Looks like it might take three steps. I have the first release of Lion, and Apple says a direct upgrade to Sierra requires 10.7.5. :-( >But pointless wasting the money because El Capitan is free. So, Lion to El Cap to Sierra? >El Capitan is still available. Apple has a support article providing a >link to get it from App Store. > >https://support.apple.com/HT206886 Oh, that page specifically mentions Snow Leopard! Looks like I can go SL -> El Cap -> Sierra. JR, I saw your advice about RAM, too. Will investigate that. Patty
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| From | dempson@actrix.gen.nz (David Empson) |
|---|---|
| Date | 2017-01-14 00:06 +1300 |
| Message-ID | <1mztdwq.wetz8911a7t02N%dempson@actrix.gen.nz> |
| In reply to | #98592 |
Patty Winter <patty1@wintertime.com> wrote: > In article <1mzsbbk.1m88y4h1qzd853N%dempson@actrix.gen.nz>, > David Empson <dempson@actrix.gen.nz> wrote: > > > >Upgrading a 10.6 system to 10.12 requires upgrading to an intermediate > >version, then to 10.12. That sounds like two steps to me. > > Looks like it might take three steps. I have the first release of > Lion, and Apple says a direct upgrade to Sierra requires 10.7.5. :-( If you are currently running Snow Leopard, previously bought Lion (i.e. it appears in your App Store purchase history), then you can download the latest Lion installer from your purchase history, install that (which will give you 10.7.5), and then install Sierra once running Lion. If your Mac was already running Lion (10.7.0), then you could just use App Store to do a software update to 10.7.5 before installing Sierra. There is no practical difference between going from Snow Leopard to Lion then to Sierra, vs going from Snow Leopard to El Capitan then Sierra. As always, make sure you have a full backup of your Snow Leopard system before starting the upgrades, in case something goes wrong and you need to roll back to where you started. > >But pointless wasting the money because El Capitan is free. > > So, Lion to El Cap to Sierra? > > >El Capitan is still available. Apple has a support article providing a > >link to get it from App Store. > > > >https://support.apple.com/HT206886 > > Oh, that page specifically mentions Snow Leopard! Looks like I > can go SL -> El Cap -> Sierra. Yes. -- David Empson dempson@actrix.gen.nz
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| From | Patty Winter <patty1@wintertime.com> |
|---|---|
| Date | 2017-01-13 16:50 +0000 |
| Message-ID | <o5b0gt$rik$1@dont-email.me> |
| In reply to | #98601 |
In article <1mztdwq.wetz8911a7t02N%dempson@actrix.gen.nz>, David Empson <dempson@actrix.gen.nz> wrote: > >As always, make sure you have a full backup of your Snow Leopard system >before starting the upgrades, in case something goes wrong and you need >to roll back to where you started. What's the best way to make a full backup that can be restored properly? >> >But pointless wasting the money because El Capitan is free. I downloaded it last night. Patty
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| From | nospam <nospam@nospam.invalid> |
|---|---|
| Date | 2017-01-13 11:58 -0500 |
| Message-ID | <130120171158288703%nospam@nospam.invalid> |
| In reply to | #98609 |
In article <o5b0gt$rik$1@dont-email.me>, Patty Winter <patty1@wintertime.com> wrote: > >As always, make sure you have a full backup of your Snow Leopard system > >before starting the upgrades, in case something goes wrong and you need > >to roll back to where you started. > > What's the best way to make a full backup that can be restored properly? best depends on many factors, but the easiest way is clone it.
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| From | Jolly Roger <jollyroger@pobox.com> |
|---|---|
| Date | 2017-01-13 16:59 +0000 |
| Message-ID | <edsfc3FmgsgU1@mid.individual.net> |
| In reply to | #98609 |
On 2017-01-13, Patty Winter <patty1@wintertime.com> wrote: > > In article <1mztdwq.wetz8911a7t02N%dempson@actrix.gen.nz>, > David Empson <dempson@actrix.gen.nz> wrote: >> >>As always, make sure you have a full backup of your Snow Leopard system >>before starting the upgrades, in case something goes wrong and you need >>to roll back to where you started. > > What's the best way to make a full backup that can be restored properly? If you have a recent Time Machine backup, that will suffice. Otherwise (or additionally if you want more than one backup), you can use SuperDuper to back up the startup drive to another hard drive or a disk image, then restore from that if needed later. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR
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| From | Patty Winter <patty1@wintertime.com> |
|---|---|
| Date | 2017-01-13 18:12 +0000 |
| Message-ID | <o5b5ao$e5t$2@dont-email.me> |
| In reply to | #98611 |
In article <edsfc3FmgsgU1@mid.individual.net>, Jolly Roger <jollyroger@pobox.com> wrote: >On 2017-01-13, Patty Winter <patty1@wintertime.com> wrote: >> >> What's the best way to make a full backup that can be restored properly? > >If you have a recent Time Machine backup, that will suffice. Oh, sure, I have that. And it will be safe even after the computer backs up the new system, right? Patty
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| From | dempson@actrix.gen.nz (David Empson) |
|---|---|
| Date | 2017-01-14 10:06 +1300 |
| Message-ID | <1mzu4kl.15txfih13yr6omN%dempson@actrix.gen.nz> |
| In reply to | #98616 |
Patty Winter <patty1@wintertime.com> wrote: > In article <edsfc3FmgsgU1@mid.individual.net>, > Jolly Roger <jollyroger@pobox.com> wrote: > >On 2017-01-13, Patty Winter <patty1@wintertime.com> wrote: > >> > >> What's the best way to make a full backup that can be restored properly? > > > >If you have a recent Time Machine backup, that will suffice. > > Oh, sure, I have that. And it will be safe even after the computer > backs up the new system, right? To restore the Snow Leopard system from a TM backup, you would need to boot from a Snow Leopard install DVD, use the utility to restore a Time Machine backup, then you can pick an arbitrary backup to be restored. Older TM backups made under Snow Leopard will still be available, apart from the usual pruning pattern: TM retains one backup per day for the last month, one per week prior to that. TM won't prune backups until it does a new automatic backup, so you can delay deletion of the last Snow Leopard backup by doing the upgrade as follows: 1. Arrange the timing so that your final Time Machine backup will be the first one in the day. The easiest way to do this to turn off automatic Time Machine backups the previous night (System Preferences > Time Machine > big switch OFF). The first backup of the day is retained for a month, which gives you a longer period in which you can be sure that backup is available to be restored. 2. Before doing the final backup, quit all applications. Some applications like active virtual machine software or Microsoft Entourage constantly modifies their files, which cannot be reliably backed up by Time Machine while the application is running. 3. Do a manual backup with Time Machine. 4. When the backup finishes, make a note of the date and time so you can easily locate the last Snow Leopard backup. 5. Do the OS upgrades. 6. Once running the new system, test that everything is working to your satisfaction. 7. Once you are happy, turn on automatic Time Machine backups again in System Preferencees. (The first backup under the new OS will be a big one as it needs to back up the entire operating system, but it will happen in the background as normal.) I prefer to keep a separate clone backup made with SuperDuper (or Carbon Copy Cloner) just before upgrading a system, and hold onto that backup for a while. This avoids the trouble of having to find a specific TM backup to restore, and worrying about whether that last backup had been pruned. (I quit all applications before making that clone, so that nothing important is being modified while the backup is in progress.) Another factor is that you can configure Time Machine to not back up some folders. If you've used that feature (which I have), then a TM backup will not be sufficient to do a full system restore. -- David Empson dempson@actrix.gen.nz
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| From | Jolly Roger <jollyroger@pobox.com> |
|---|---|
| Date | 2017-01-14 01:12 +0000 |
| Message-ID | <edtc8lFtcplU1@mid.individual.net> |
| In reply to | #98618 |
David Empson <dempson@actrix.gen.nz> wrote: > > I prefer to keep a separate clone backup made with SuperDuper (or Carbon > Copy Cloner) just before upgrading a system, and hold onto that backup > for a while. This avoids the trouble of having to find a specific TM > backup to restore, and worrying about whether that last backup had been > pruned. (I quit all applications before making that clone, so that > nothing important is being modified while the backup is in progress.) > > Another factor is that you can configure Time Machine to not back up > some folders. If you've used that feature (which I have), then a TM > backup will not be sufficient to do a full system restore. I use SuperDuper to do one-off backups like that before major upgrades as well. And if you use it to back up to a disk image you can keep that around indefinitely. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR
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| From | Patty Winter <patty1@wintertime.com> |
|---|---|
| Date | 2017-01-16 20:38 +0000 |
| Message-ID | <o5jav8$8gf$1@dont-email.me> |
| In reply to | #98618 |
In article <1mzu4kl.15txfih13yr6omN%dempson@actrix.gen.nz>, David Empson <dempson@actrix.gen.nz> wrote: > >To restore the Snow Leopard system from a TM backup, you would need to >boot from a Snow Leopard install DVD, use the utility to restore a Time >Machine backup, then you can pick an arbitrary backup to be restored. Just to verify, a TM backup made by Snow Leopard will still be fully readable by El Capitan or Sierra, right? There's no index whose format has changed in recent years or anything like that? Patty
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| From | Jolly Roger <jollyroger@pobox.com> |
|---|---|
| Date | 2017-01-16 21:55 +0000 |
| Message-ID | <ee4tr3Fol88U1@mid.individual.net> |
| In reply to | #98692 |
On 2017-01-16, Patty Winter <patty1@wintertime.com> wrote: > > In article <1mzu4kl.15txfih13yr6omN%dempson@actrix.gen.nz>, > David Empson <dempson@actrix.gen.nz> wrote: >> >>To restore the Snow Leopard system from a TM backup, you would need to >>boot from a Snow Leopard install DVD, use the utility to restore a Time >>Machine backup, then you can pick an arbitrary backup to be restored. > > Just to verify, a TM backup made by Snow Leopard will still be fully > readable by El Capitan or Sierra, right? There's no index whose format > has changed in recent years or anything like that? Hmm... Good question. I have computers running 10.6 and 10.11 getting backed up with Time Machine. And I don't see a significant difference in the data stored on the backup volume. So I wouldn't expect any problems; but since I haven't actually restored a 10.6 TM backup to the latest OS versions, I can't say with complete certainty you won't have any issues. With that said, I don't think you need to worry about the TM backup itself being compromised by attempting to restore from it. The restore will either work or it won't. If it doesn't work, you still have your data backed up if you need to start over. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR
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| From | Alan Browne <alan.browne@freelunchvideotron.ca> |
|---|---|
| Date | 2017-01-16 17:29 -0500 |
| Message-ID | <5uqdnQQMPoOp1ODFnZ2dnUU7-T3NnZ2d@giganews.com> |
| In reply to | #98697 |
On 2017-01-16 16:55, Jolly Roger wrote: > On 2017-01-16, Patty Winter <patty1@wintertime.com> wrote: >> >> In article <1mzu4kl.15txfih13yr6omN%dempson@actrix.gen.nz>, >> David Empson <dempson@actrix.gen.nz> wrote: >>> >>> To restore the Snow Leopard system from a TM backup, you would need to >>> boot from a Snow Leopard install DVD, use the utility to restore a Time >>> Machine backup, then you can pick an arbitrary backup to be restored. >> >> Just to verify, a TM backup made by Snow Leopard will still be fully >> readable by El Capitan or Sierra, right? There's no index whose format >> has changed in recent years or anything like that? > > Hmm... Good question. I have computers running 10.6 and 10.11 getting > backed up with Time Machine. And I don't see a significant difference in > the data stored on the backup volume. So I wouldn't expect any problems; > but since I haven't actually restored a 10.6 TM backup to the latest OS > versions, I can't say with complete certainty you won't have any issues. > With that said, I don't think you need to worry about the TM backup > itself being compromised by attempting to restore from it. The restore > will either work or it won't. If it doesn't work, you still have your > data backed up if you need to start over. You can also bypass the TM application and simply dive in to the TM backup files and find what may be missing and copy it onto the new machine (or updates OS machine). -- "If war is God's way of teaching Americans geography, then recession is His way of teaching everyone a little economics." ..Raj Patel, The Value of Nothing.
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| From | dempson@actrix.gen.nz (David Empson) |
|---|---|
| Date | 2017-01-17 12:18 +1300 |
| Message-ID | <1mzzvtq.6nxr711bzi71gN%dempson@actrix.gen.nz> |
| In reply to | #98692 |
Patty Winter <patty1@wintertime.com> wrote: > In article <1mzu4kl.15txfih13yr6omN%dempson@actrix.gen.nz>, > David Empson <dempson@actrix.gen.nz> wrote: > > > >To restore the Snow Leopard system from a TM backup, you would need to > >boot from a Snow Leopard install DVD, use the utility to restore a Time > >Machine backup, then you can pick an arbitrary backup to be restored. > > Just to verify, a TM backup made by Snow Leopard will still be fully > readable by El Capitan or Sierra, right? There's no index whose format > has changed in recent years or anything like that? Readable for _selectively_ restoring older files, yes, using either the "Enter Time Machine" view or manually using Finder to browse the backup drive. The structure of the TM backup has not (yet) changed since its introduction in Leopard, apart from the addition of new features that are outside the scope of backups made on Leopard or Snow Leopard. The two major new features are: 1. Backing up the recovery partition to a directly connected TM drive (not supported for a networked backup drive such as a Time Capsule). This was added in Mac OS X 10.7.2 (part way through Lion). The backup drive can be booted into its copy of the recovery partition, which makes it easier to restore the computer if the main drive is replaced. The recovery partition backup is stored in a hidden folder in the Backups.backupdb folder on the TM backup drive. 2. Local Snapshots. This is used on portable Macs only, and was also added in Lion. If there is enough free space on your main drive, Time Machine will keep another backup copy of changed documents on the main drive, whether or not your backup drive is not connected. (This is separate from the "Autosave and Versions" mechanism that was introduced in Lion.) It doesn't involve your backup drive at all so has no impact on its structure. You might not be able to do a full system restore of a Snow Leopard backup using the recovery partition on recent OS versions (I haven't tried), but you will be able to restore it by booting from the Snow Leopard install DVD (or the original grey backed install DVD that came with your computer, for 2010 or 2011 models that are too new to use a Snow Leopard retail DVD). -- David Empson dempson@actrix.gen.nz
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| From | John Albert <j.albert@snet.net> |
|---|---|
| Date | 2017-01-16 23:25 -0500 |
| Message-ID | <W0hfA.8517$Tc2.1720@fx38.iad> |
| In reply to | #98692 |
On 1/16/17 3:38 PM, Patty Winter wrote: > Just to verify, a TM backup made by Snow Leopard will still be fully > readable by El Capitan or Sierra, right? There's no index whose format > has changed in recent years or anything like that? You could use CarbonCopyCloner or SuperDuper to create a cloned backup instead. It would be "readable" and importable by any version of the Setup Assistant or Migration Assistant...
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