The redemption mentioned in Section 27-45-7 shall operate to fully and effectually redeem that portion of the land from the operation of the tax sale from which such redemption is made and shall leave in full force and effect the tax sale as to the remainder of the land so sold for taxes, which remainder, or any part thereof, may thereafter, in the time provided by law, be redeemed by the owner or any person interested in such real estate by the payment of the balance due, or such part thereof calculated as above provided. In the event that there shall exist several trust deeds or mortgages upon the property so sold in solido, and redemption under one or more of such trust deeds shall operate so as to effect redemption of a portion of the lands in any one of the others, because of overlapping descriptions and leave unredeemed the remainder of the land covered by such other deeds of trust or mortgages, the chancery clerk shall likewise have power to apportion in the same manner as aforesaid the amount required to redeem the remainder of the land included in such trust deed, omitting the portion of the land in such trust deed which had been previously redeemed, in the manner as above provided. Upon redemption by one other than the owner of the land redeemed, it shall be the duty of the redeemer to immediately notify, in writing, by registered mail with return receipt requested, any and all persons holding prior lien or liens of deed of trust or mortgage shown by the records of deeds of trust of the county where the land is situated, of the redemption of such part or all of said land, addressed to the lienor or lienors at his or their last known post-office address, and to file a copy of such notice or notices with the chancery clerk of said county who shall make entry of the receipt of the copy of such notice or notices on the record of tax sales of his office where such record of the redemption is entered. If the redeemer shall fail to give the notice or notices as above provided for, then such redeemer shall not be entitled by subrogation, or otherwise, to obtain or be granted any prior equity upon the land so redeemed over any prior lienor or lienors on the land so redeemed, whether such equity by subrogation or otherwise existed or not. Upon redemption of land or any part thereof as above provided, the chancery clerk shall execute a release thereof from the tax sale with the same effect, and shall note the redemption on his tax sales record, as is provided for redemptions in the usual manner.