I wouldn’t bother, just install an SSD, it’ll be faster than reverting to Mavericks. There are guides on ifixit.com, it’s not massively complicated, just arrange the screws on a piece of paper in the order in which they are removed, makes it easier when reassembling. The 2008 iMac usefully has an external thermal sensor which can just be fixed to the SSD with Kapton tape (heat-resistive sticky tape). I use a combination of self-adhesive velcro and Kapton tape to secure the SSD in place.
The most complicated bit of the install will most likely be removing the display from the iMac, there’s a connector with two very small Torx screws on it, and a very stiff cable connector which connects the display to the power supply (I usually remove the display end as opposed to the power supply end as it’s less fiddly). Regards Sam <http://www.facebook.com/macambulance> <http://www.twitter.com/macambulance> <http://uk.linkedin.com/in/macambulance/> MacAmbulance Ltd. Providing Affordable Mac/PC Support and Web Development Sam Mullen ACMT +44 (0)7747778022 [email protected] <mailto:[email protected]> www.macambulance.co.uk <http://www.macambulance.co.uk/> MacAmbulance Ltd. is a registered company in England & Wales, registration number 8466597 This email is intended solely for the addressed recipients and may contain privileged or confidential information. If you have received this email in error please notify the sender and delete the email immediately. > On 19 Apr 2016, at 09:40, mac98aop <[email protected]> wrote: > > Or Sam, Apple Help Center implies I can revert to a previous OS using Time > Machine. > > I have a TimeMachine for my MBPro, could I boot and restore the iMac from > that to get Mavericks on there, at least until I install the SSD? > > > Thanks! > > On Tuesday, April 19, 2016 at 9:11:50 AM UTC+1, mac98aop wrote: > Ok, thanks Sam. > > Just seen that a low end small (but big enough) SSD really is now affordable. > > So, just to confirm, with the older style iMac (aluminium, DVD drive, not > super skinny etc) is it a case of popping off the back and installing the > SSD? Or is there a need to melt glue, reapply glue to hold in place etc?!?! > > I did my MBPro and that was as easy as you said it would be! Is the iMac as > easy? > > Thanks > > On Tuesday, April 19, 2016 at 9:04:44 AM UTC+1, Sam - MacAmbulance wrote: > Lion wouldn’t have come on a DVD. If it had a DVD it would’ve been Snow > Leopard and most likely won’t work on the iMac. You could search eBay for a > Lion USB installer stick, then just boot from that. > > Or pop an SSD in there and Yosemite will fly ;) > > Regards > > Sam > > <http://www.facebook.com/macambulance> > <http://www.twitter.com/macambulance> > <http://uk.linkedin.com/in/macambulance/> > MacAmbulance Ltd. > Providing Affordable Mac/PC Support and Web Development > > Sam Mullen ACMT > +44 (0)7747778022 > [email protected] <> > www.macambulance.co.uk <http://www.macambulance.co.uk/> > MacAmbulance Ltd. is a registered company in England & Wales, registration > number 8466597 > This email is intended solely for the addressed recipients and may contain > privileged or confidential information. If you have received this email in > error please notify the sender and delete the email immediately. > >> On 19 Apr 2016, at 09:01, mac98aop <[email protected] <>> wrote: >> >> Hi there >> >> The old iMac we were donated is on Yosemite and slow to the point of >> impossible to use. Alas, it's come with no original discs etc. >> >> My MacBook Pro came with OSX Lion I believe - can I clean install with that >> DVD? >> >> Or, is there anyway of getting an older OS on the iMac? My MacBook runs >> Mavericks, could I somehow clone it on to the iMac perhaps, USB to USB?!?! >> >> We just need it for simple surfing and the children doing very basic primary >> school assignments. Alas, homework books and a pencil seem a thing of the >> past! >> >> Thanks >> >> Adam >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Sussex Mac User Group" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <>. >> To post to this group, send email to [email protected] <>. >> Visit this group at https://groups.google.com/group/smug >> <https://groups.google.com/group/smug>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to the Google Groups > "Sussex Mac User Group" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/smug > <https://groups.google.com/group/smug>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Sussex Mac User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. Visit this group at https://groups.google.com/group/smug. For more options, visit https://groups.google.com/d/optout.
